% GLOBAL BIBLIOGRAPHY (computational geometry,volumetric visualizazion,)

@string{sacm = "ACM Computing Surveys"}

@string{jacm = "ACM Journal"}

@string{tog = "ACM Transactions on Graphics"}

@string{algo = "Algorithmica"}

@string{dcg = "Discrete and Computational Geometry"}

@string{ijcga = "International Journal of Computational Geometry and
Applications"}

@string{IEEEpro =  "Proceeding of the IEEE"}

@string{IEEEcga = "IEEE Computer Graphics and Applications"}

@string{jpdc = "Journal of Parallel and Distributed Computing"}

@string{SIAMjc = "SIAM Journal of Computing"}

@string{teocs = "Theoretical Computer Science"}

@string{lncs = "Lecture Notes in Computer Science"}

@string{springer = "Springer-Verlag"}

@string{cad = "Computer-Aided Design"}

@string{jan = "January"}
@string{feb = "February"}
@string{mar = "March"}
@string{apr = "April"}
@string{may = "May"}
@string{jun = "June"}
@string{jul = "July"}
@string{aug = "August"}
@string{sep = "September"}
@string{oct = "October"}
@string{nov = "November"}
@string{dec = "December"}

@article{aga86,
	author = "P.K. Agarwal and M. Sharir",
	title = "Applications of a New Space Partitioning Technique",
	journal = "Discrete and Computational Geometry",
	volume = "9",
	year = "1986",
	pages = "11-83",
	topic = {visibility}}
	
@inproceedings{aga94,
	author = " P.K. Agarwal and S. Suri",
	year = "1994",
	title = "Surface approximation and geometric partitions",
	booktitle = "Proceedings 5th ACM-SIAM Symposium On Discrete Algorithms",
	pages = "24-33",
	topic = {computational geometry}}

@article{agg89,
	author = "A. Aggarwal and L.J. Guibas and J. Saxe and P. Shor",
	title = "A linear-time algorithm for computing the {V}oronoi diagram
                of a convex polygon",
	journal = dcg,
	volume = "4",
	pages = "591-604",
	year = "1989",
	topic = {computational geometry}}

@article{and90,
	author = "D.C. Anderson and T.C. Chang", 
	title = "Geometric Reasoning in Feature-Based Design and Process Planning", 
	journal = "Computer \& Graphics",
	volume = "14", 
	number = "2", 
	year = "1990",
	topic = {CAD}}

@article{ans85, 
	author = "S. Ansaldi and L. De Floriani and B. Falcidieno", 
	title = "Geometric Modeling of Solid Objects by Using a Face Adjacency Graph 
    	     Representation", 
	journal = "Computer Graphics",
	volume = "19", 
	number = "3",  
	month = jul, 
	year = "1985", 
	pages = "131-139",
	topic = {CAD}}

@article{arb90, 
	author = "S. Arbab",
	title = "Set Models and Boolean Operations for Solids and Assemblies",
	journal = "IEEE Computer Graphics and Applications",
	volume = "10", 
	number = "6", 
 	pages = "76-86", 
 	year = "1990",
	topic = {CAD}}

@inproceedings{ata83,
	author = "M. Atallah",
	title = "Dynamic Computational Geometry",
	booktitle = "Proc. 24th Symposium on Foundations of Computer Science",
	publisher = "IEEE Computer Society, Baltimora",
	year = "1983",
	pages = "92-99",
	topic = {visibility}}
	% see also J. Computational and Applied Math., 1985 for an extended version.

@incollection{avi83,
	author = "D. Avis and B. K. Battacharya",
	title = "Algorithms for computing $d$-dimensional {V}oronoi
		diagrams and their duals",
	booktitle = "Advances in computing research",
	volume = "1",
	editor = "F.P. Preparata",
	publisher = "JAI Press",
	year = "1983",
	pages = "159-180",
	topic = {computational geometry}}
	
@inproceedings{bar84,
	author = " R. Barrera  and A.M.  Vazquez", 
	title = "A hierarchical method for representing relief",
	booktitle = "Proceedings Pecora 9th Symposium on Spatial 
				Information Technologies for Remote Sensing Today and Tomorrow",
	address =  "Sioux Falls (South Dakota)",
	month = oct,
	year = "1984",
	pages = "87-92",
	topic = {gis}}

@TechReport{bar87,
	author = "Barrera, R. and Hinojosa, M.",
	title = "Compression method for terrain relief",
	institution =  "CINVESTAV, Engineering Projects,  
					Department of Electrical Engineering, 
					Polytecnic University of Mexico, Mexico City",
	year = "1987",
	topic = {gis}}

@TechReport{bau72, 
	author =      "B.G. Baumgart", 
	title =       "Winged-edge Polyhedron Representation", 
	number =      "STAN-CS-320", 
	institution = "Computer Science Department, Stanford University, 
    	          Stanford, CA", 
	year = "1972",
	topic = {CAD}}

@inproceedings{bau75,
	author = "H.B. Baumgardt",
	title =  "A Polyhedron Representation for Computer Vision",
	booktitle =  "Proceedings AFIPS National Conference", 
	volume = "44",
    pages = "589-596",    
	year = "1975",
	topic = {CAD}}

@incollection{ber92,
	author = "M. Bern and D. Eppstein",
	title = "Mesh generation and optimal triangulation",
	booktitle = "Computing in Euclidean Geometry",
	editor = "D.-Z. Du and F. Hwang",
	publisher = "World Scientific",
	year = "1992",
	pages = "23-90",
	topic = {computational geometry}}

@inproceedings{ber93,
	author = "M. Bertolotto and E. Bruzzone and L. De Floriani",
	title = "Acyclic hierarchical cell complexes",
	booktitle = "Proceedings 5th Canadian Conference on Computational
                         Geometry",
	address = "Waterloo (Canada)",
	month = "August",
	year = "1993",
	pages = "279-284",
	topic = {computational geometry}}

@article{ber94,
	author = "M. Bern and D. Dobkin and D. Eppstein and R. Grossman",
	title = "Visibility with a moving point of view",
	journal = "Algorithmica",
	volume = "11",
	year = "1994",
	pages = "360-378",
	topic = {visibility}}

@inproceedings{ber94a,
	author = " M. Bertolotto and L. De Floriani and P. Marzano", 
	title = "An Efficient Representation for Pyramidal Terrain Models",
	booktitle = "Proceedings 2nd ACM Workshop on Advances in GISs",
	address =  "Gaithersburg (MA)",
	month = dec,
	year = "1994",
	pages = "129-136",
	topic = {gis}}

@article{ber94b,
	author = "M. Bertolotto, L. De Floriani, E. Puppo", 
	title = "Multiresolution Topological Maps",
	journal = "Advanced Geographic Data Modelling 
			- Spatial Data Modelling and Query Languages 
	for 2D and 3D Applications", 
	volume = "40",
	year = "1994",
	pages = "179-190",
	topic = {gis}}
	
@incollection{ber94c,
	author = "M. Bertolotto and E. Bruzzone and L. De Floriani, E. Puppo",
	title = "Multiresolution representation of volume data through
                hierarchical simplicial complexes",
	booktitle = "Aspects of Visual Form Processing",
	editor = "C. Arcelli and L.P. Cordella and G. Sanniti di Baja",
	publisher = "World Scientific",
	address = "Singapore",
	year = "1994",
	pages = "73-82",
	topic = {volumetric visualization}}

@incollection{ber94d,
        author = "M.\ Bertolotto, L.\ De Floriani, E.\ Puppo",
        title = "Hierarchical Hypersurface Modeling",
        booktitle = "IGIS'94: Geographic Information Systems",
        editor = "J.\ Nievergelt, T.\ Roos, H.\ Schek, P.\ Widmayer",
        publisher = "Springer-Verlag, Lecture Notes in Computer Science N.884",
        year = "1994",
        pages = "88-97",
		topic = {gis}}

@inproceedings{ber95a,
	author = " M. Bertolotto and L. De Floriani and P. Marzano", 
	title = "Pyramidal Simplicial Complexes",
	booktitle = "The 3rd Symposium on Solid Modeling and Applications 1995",
	address = "Salt Lake City (Utah)",
	month = may,
	year = "1995",
	pages = "153-162",
	topic = {gis}}

@article{ber95b, 
	author = "M. Bertolotto and E. Bruzzone and L. De Floriani and G. Nagy",
	title = "Generating Assembly and Machining Sequences from the 
			Face-to-Face Composition Model",
	journal = cad,
	note = "(in print)", 
	year = "1995",
	topic = {CAD}}

@article{bes85, 
	author = "P.J. Besl and R.C. Jain", 
	title = "Three-dimensional Object Recognition", 
	journal = "ACM Comput. Surveys", 
	volume = "17", 
	number = "1", 
	month = mar, 
	year = "1985", 
	pages = "75-145",
	topic = {CAD}}

@inproceedings{bes88, 
	author = "P.J. Besl", 
	title = "Geometric Modelling and Computer Vision", 
	booktitle = "Proceedings IEEE'76, 8", 	
	year = "1988", 
	pages = "936-958",
	topic = {CAD}} 

@article{bie85,  
	author = "I. Biederman", 
	title = "Human Image Understanding: Recent Research and a Theory", 
	journal = "Computer Vision, Graphics and Image Processing",
	volume = "32", 
	year = "1985",
	pages = "29-73",
	topic = {CAD}}

@article{bie87,  
	author = "I. Biederman", 
	title = "Recognition-by-Components: A theory of Human Image 
				Understanding", 
	journal = "Psychol. Rev.",
	volume = "94", 
	number = "2", 
	year = "1987", 
	pages = "115-147",
	topic = {CAD}}

@article{bin82,  
	author = "T.O. Binford", 
	title = "Survey of Model-based Image Analysis Systems", 
	journal = "ACM Transaction on Graphics", 
	volume = "3",
	number = "4", 
	month = apr, 
	year = "1984", 
	pages = "266-286",
	topic = {CAD}}

@article{boi84,  
	author = "J.D. Boissonnat", 
	title = "Geometric Structures for Three-Dimensional 
			Shape Representation", 
	journal = "Int. J. Robotics Res.", 
	volume = "1", 
	number = "1", 
	year = "1982",
	topic = {CAD}}

@article{boi88,
	author = "J.D. Boissonnat", 
	title = "Shape Reconstruction from Planar Cross-Sections", 
	journal = "Computer Vision, Graphics and Image Processing", 
	volume = "44", 
	year = "1988", 
	pages = "1-29",
	topic = {CAD}}

@TechReport{boi91,
	author = "J.D. Boissonnat et al.",
	title = "Output sensitive construction of the 3D {D}elaunay
                 triangulation of constrained sets of points",
	institution =  "Institut National de Recherche en Informatique et
                 Automatique (National Institute for Research in
                 Computer and Control Sciences) -- France",
	number = "RR-1415",
	url = "ftp://ftp.inria.fr/INRIA/tech-reports/RR-1415.ps.Z",
	year = "1991",
	topic = {computational geometry}}

@inproceedings{boi92,
	author = "J.D. Boissonnat and K. Dobrindt",
	title = "On-Line construction of the upper envelope of triangles in ${R}^3$",
	booktitle = "Proc. 4th Canadian Conference on Computational Geometry, 
			St.John's, Newfoundland",
	year = "1992",
	publisher = "Memorial, Newfoundland",
	pages = "311-315",
	topic = {visibility}}

@inproceedings{bra88,  
	author = "J. Brady and N. Nandhakumar and J. Aggarwal", 
	title = "Recent Progress in the Recognition of Objects from Range Data", 
	booktitle = "Proceedings $9th$ Int. Conf. Pattern Recognition",
 	month = nov, 
	year = "1988", 
	pages = "85-92",
	topic = {CAD}}

@inproceedings{bri89,
author = "E. \ Brisson",
	title = "Representing Geometric Structures in $d$-dimensions:
                         Topology and Order",
	booktitle = "Proceedings $5th$ ACM Symposium on Computational Geometry",
	address = "Saarbruchen",
	year = "1989",
	pages = "218-227",
	topic = {computational geometry}}

@article{bro81,  
	author = "R.A. Brooks", 
	title = "Symbolic Reasoning among 3-{D} Models and 2-{D} Images", 
	journal = "Artif. Intell.", 
	volume = "17", 
	year = "1981", 
	pages = "285-348",
	topic = {CAD}}

@TechReport{bru89, 
	author = "E. Bruzzone and A. Maulik",
	title = "A Cellular Data Structure for Solid Objects
			in the Face-to-Face Composition Model",
	number = "89-026", 
	institution = "Rensselaer Polytechnic Institute, Troy, NY", 
	month = oct, 
	year = "1989",
	topic = {CAD}}

@article{bru90,
	author = "E. \ Bruzzone and L. \ De Floriani",
	title = "Two Data Structures for Building Tetrahedralizations",
	journal = "The Visual Computer",
	volume = "6",
	pages = "266-283",
	year = "1990",
	topic = {computational geometry}}

@inproceedings{bru91a,            
	author = "E. Bruzzone and L. De Floriani", 
	title = "Validity Issues for Modular Boundary Models",
	booktitle = "Proceedings Eurographics $'91$",  
	address = "Vienna", 
	month = sep, 
	year = "1991", 
	pages = "115-126",
	topic = {CAD}}

@inproceedings{bru91b,        
	author = "E. Bruzzone and L. De Floriani", 
	title = "Representing a Modular Boundary Model Through a Cellular 
			Decomposition",
	booktitle = "Proceedings Eurographics Workshop on Computer Graphics and
			 Mathematics", 
	address = "Santa Margherita, Italy", 
	month = oct, 
	year = "1991",
	topic = {CAD}}

@article{bru91c,
	author = "E. Bruzzone and L. De Floriani", 
	title = "Extracting Adjacency Relationships from a Modular Boundary Model",
	journal = cad,
	volume = "23", 
	number = "5", 
	address = "Londra", 
	month = jun, 
	year = "1991",
	topic = {CAD}}

@incollection{bru92a,
	author = "E. Bruzzone and G. Garibotto and F. Mangili",  
	title = "Three-Dimensional Surface Reconstruction using {D}elaunay
	         Triangulation in the Image Plane",
	booktitle = "Visual Form - Analysis and Recognition", 
	editor = "C. Arcelli and L.P. Cordella and G. Sanniti di Baja", 
	publisher = "Plenum Press", 
	address = "New York", 
	year = "1992", 
	pages = "99-108",
	topic = {CAD}}  

@inproceedings{bru92b,
	author = "E. Bruzzone and M. Cazzanti and L. De Floriani and F. Mangili",     
	title = "Applying Two-Dimensional {D}elaunay Triangulation to Stereo Data 
    	     Integration", 
	booktitle = "Proceedings European Conference on Computer Vision", 
	address = "Santa Margherita, Italy", 
	month = may, 
	year = "1992", 
	pages = "368-372",
	topic = {CAD}}

@incollection{bru93a,
	author = "E. Bruzzone and L. De Floriani and M. Pellegrinelli", 
	title = "A Hierarchical Spatial Index for Cell Complexes",  
	booktitle = "Advances in Spatial Databases", 
	editor = "D. Abel and B.C. Ooi",  
	publisher = "Springer-Verlag, Lecture Notes in Computer Science N. 692",  
	year = "1993",
	topic = {CAD}}

@inproceedings{bru93b,
	author = "E. Bruzzone and L. De Floriani and P. Gallo and F. Mangili",  
	title = "A Real-Time Stereo Vision System for a Mobile Robot 
    	     with Exploratory Tasks",
	booktitle = "Proceedings $7th$ International Conference on Image Analysis 
				and Processing", 
	address = "Bari, Italy", 
	month = sep, 
	year = "1993", 
	pages = "591-598",
	topic = {CAD}}
  
@phdthesis{buf93,
 	author = "M. Buffa", 
 	title = "Robot Navigation by Using Stereo Vision and {D}elaunay
			 Triangulation",
 	school = "University of Nice", 
 	note = "(in French)",
 	year = "1993",
	topic = {CAD}}
 
@incollection{caz91,
	author = "M. Cazzanti and L. De Floriani and G. Nagy and E. Puppo",
	title ="Visibility Computation on a Triangulated Terrain",
	year = "1991",
	booktitle = "Progress in Image Analysis and Processing II",
	publisher = "World Scientific Publishing, Singapore",
	pages = "721-728",
	topic = {visibility}}

@inproceedings{che86,
	author = " Z.T\ Chen and W.R.  Tobler", 
	title = "Quadtree representation of digital terrain",
	booktitle = "Proceedings Autocarto",
	address =  "London (UK)",
	year = "1986",
	pages = "475-484",
	topic = {gis}}

@Article{che89a,
	author = "Chew",
	title = "Constrained {D}elaunay Triangulations",
	journal = "Algorithmica",
	volume = "4",
	year = "1989",
	topic = {computational geometry}}

@article{che89b,  
	author = "C. Chen and A. Kak", 
	title = "A Robot Vision System for Recognizing 3-{D} Objects in Low-Order 
        	Polynomial Time", 
	journal = "IEEE Transaction Syst. Man Cybern.", 
	volume = "19", 
	number = "6",  
	month = "November-December", 
	year = "1989", 
	pages = "1535-1563",
	topic = {CAD}}

@inproceedings{che90,  
	author = "S. Chen and H. Freeman", 
	title = "Computing Characteristic Views of Quadric-Surfaced Solids", 
	booktitle = "Proceedings $10th$ International Conference on Pattern 
			Recognition", 
	address = "Atlantic City, NJ", 
	month = "17-21 June", 
	year = "1990",
	topic = {CAD}}

@inproceedings{che92,  
	author = "S. Chen and H. Freeman", 
	title = "The Dominant Views of Solid Objects", 
	booktitle = "Proccedings $11th$ ICPR", 
	address = "The Hague, The Netherlands", 
	month = "30 August-3 September", 
	year = "1992",
	topic = {CAD}}

@article{chi86,  
	author = "R.T. Chin and C.R. Dyer", 
	title = "Model-Based Recognition in Robot Vision", 
	journal = "ACM Comput. Surveys", 
	volume = "18", 
	number = "1", 
	month = mar, 
	year = "1986", 
	pages = "67-108",
	topic = {CAD}}

@article{col89,
	author = "R. Cole and M. Sharir",
	title ="Visibility Problems for Polyhedral Terrains",
	journal ="Journal of Symbolic Computation",
	volume = "17",
	year = "1989",
	pages = "11-30",
	topic = {visibility}} 

@incollection{deb93,
	author = "M. De Berg",
	title = "Ray shooting, Depth Orders and Hidden Surface Removal", 
	year = "1993",
	booktitle = "Lecture Notes in Computer Science",
	volume = "703",
	publisher = "Springer Verlag, New York",
	topic = {visibility}}

@article{deb94,
	author = "M. De Berg and D. Halperin and M. Overmars and J. Snoeyink and M. Van Kreveld",
	title = "Efficient ray shooting and hidden surface removal",
	journal = "Algorithmica: An International Journal in Computer Science",
	volume = "12",
	number = "1",
	year = "1994",
	publisher = "Springer Verlag, New York", 
	pages = "30-53",
	topic = {visibility}}
   
@article{def84,
	author = "L. De Floriani and B. Falcidieno and C. Pienovi and G. Nagy", 
	title = "A hierarchical data structure for surface approximation", 
	journal = "Computers and Graphics", 
	volume = "8",
	number = "2",
	year = "1984",
	pages = "475-484",
	topic = {gis}}

@article{def85,
	author = "L. De Floriani and B. Falcidieno and C. Pienovi", 
	title = "{D}elaunay-based representation of surfaces defined over arbitrarily shaped", 
	journal = "Computer Vision, Graphics, and Image Processing", 
	volume = "32",
	year = "1985",
	pages = "127-140",
	topic = {gis}}

@InProceedings{def88a,
	author = "L. De Floriani and E. Puppo",
	title = "Constrained {D}elaunay Triangulation for
                 Multiresolution Surface Description",
	booktitle = "Proceedings Ninth IEEE International Conference on Pattern
                 Recognition",
	publisher = "CS Press",
	address = "Los Alamitos, California",
	year = "1988",
	pages = "566--569",
	topic = {computational geometry}}

@article{def88b, 
	author = "L. De Floriani and B. Falcidieno", 
	title = "A Hierarchical Boundary Model for Solid Object Representation", 
	journal = "ACM Transactions on Graphics", 
	volume = "7", 
	number = "1", 
	year = "1988",  
	pages = "42-60",
	topic = {CAD}}

@article{def89a, 
	author = "L. De Floriani", 
	title = "Feature Extraction from Boundary Models of Three-Dimensional 
			Objects", 
	journal  = "IEEE Transactions on Pattern Analysis and Machine Intelligence", 
	volume = "11", 
	number = "8", 
	month = aug, 
	year = "1989", 
	pages = "798-798",
	topic = {CAD}}

@article{def89b,
	author = "L. De Floriani and E. Bruzzone",  
	title = "Building a Feature-Based Object Description from a Boundary Model",
	journal = cad,
	volume = "21", 
	number = "10",  
	address = "London", 
	month = dec, 
	year = "1989",
	topic = {CAD}}

@article{def89c,
	author = "L. De Floriani", 
	title = "A pyramidal data  structure for triangle-based surface description", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "32",
	year = "1989",
	pages = "67-78",
	topic = {gis}}

@incollection{def91, 
	author = "L. De Floriani and A. Maulik and G. Nagy",
	title = "Representation of Solid Objects by a Modular Boundary Model",
	booktitle = "Computer-Aided Mechanical Assembly Planning", 
	editor = "Homem de Mello and Lee", 
	publisher = "Kluwer Academic Publishers", 
	year = "1991",
	topic = {CAD}}

@incollection{def92a,
	author = "L. De Floriani and E. \ Puppo", 
	title = "A hierarchical triangle-based model for terrain description",
	booktitle = "Theories and Methods of Spatio-Temporal Reasoning in Geographic Space",
	editor = "A.U. Frank, I. Campari, U. Formentini",
	publisher = "Springer-Verlag, Lecture Notes in Computer Science, N.639",
	year = "1992",
	pages = "236-251",
	topic = {gis}} 

@Article{def92b,
	author = "L. De Floriani and E. Puppo",
	title = "An On-Line Algorithm for Constrained {D}elaunay Triangulation",
	journal = "Computer Vision, Graphics, and Image Processing",
	volume = "54",
	year = "1992",
	month = "July",
	pages = "290-300",
	topic = {computational geometry}}
	
@incollection{def92c, 
	author = "L. De Floriani and E. Puppo",
	title = "Extraction and Representation of Shape Features for  
    	     {CAD}/{CAM} Applications", 
	booktitle = "Visual Form", 
	editor = "C. Arcelli and L.P. Cordella and G. Sanniti di Baja", 
	publisher = "World Scientific", 
	year = "1992",
	topic = {CAD}}

@incollection{def93a,
	author = "L. De Floriani and P. Marzano and E. \ Puppo", 
	title = "Spatial queries and data models",
	booktitle = "Information Theory: a Theoretical Basis for GIS",
	editor = "A.U. Frank, I. Campari and U. Formentini",
	publisher = "Springer-Verlag, Lecture Notes in Computer Science, N.716",
	year = "1992",
	pages = "113-138",
	topic = {gis}} 

@inproceedings{def93b,
	author = "  L. De Floriani and D. Mirra and E. Puppo", 
	title = "Extracting contour lines from a hierarchical surface model",
	booktitle = "Computer Graphics Forum (Conference Issue)",
	volume = "12", 
	number = "3",
	month = sep,
	year = "1993",
	pages = "249-260",
	topic = {gis}}

@inproceedings{def93c,
	author = "L. De Floriani and P. Magillo",
	title = "Algorithms for visibility computation on Digital Terrain Models",
	booktitle = "Proc. ACM Symposium on Applied Computing (SAC), Indianapolis",
	editor = "E. Deaton and K.M. George and H. Berghel and G. Hedrick",
	year = "February 1993",
	pages = "380-387",
	topic = {visibility}}

@incollection{def93d,
	author = "L. De Floriani and P. Magillo",
	title = "Computing Visibility Maps on a Digital Terrain Model",
	year = "1993",
	booktitle = "Lecture Notes in Computer Science",
	volume = "716",
	pages = "248-269",
	topic = {visibility}}

@inproceedings{def93e,
	author = "L. De Floriani and E. Puppo and G. Nagy",
	title = "Computing a line-of-sight network on a terrain model",
	booktitle = "Proc. 5th International Symposium on Spatial Data Handling, 
	Charleston, SC",
	volume = "2",
	year = "1992",
	publisher = "IGU Commission on GIS, Columbia, SC",
	editor = "P. Bresnahan, E. Corwin, D. Cowen", 
	pages = "672-681",
	topic = {visibility}} 

@inproceedings{def94a,
	author = "  L. De Floriani and P. Marzano and E. Puppo", 
	title = "Hierarchical terrain models: survey and formalization",
	booktitle = "Proceedings SAC'94",
	address =  "Phoenix (AR)",
	month = mar,
	year = "1994",
	pages = "323-327",
	topic = {gis}}

@article{def94b,
	author = "L. De Floriani and P. Marzano and E. Puppo", 
	title = "Multiresolution Models for Topographic Terrain Description", 
	journal = "The Visual Computer", 
	volume = "accepted for publication",
	year = "1994",
	pages = "67-78",
	topic = {gis}}

@article{def94c,
	author = "L. De Floriani and P. Marzano and E. Puppo",
	title = "Line-of-sight Communication on Terrain Models", 
	year = "1994",
	journal = "International Journal of Geographic Information Systems",
	volume = "8",
	number = "4",
	topic = {visibility}}

@inproceedings{def94d,
	author ="L. De Floriani and P. Magillo",
	title ="Computing Point Visibility on a Terrain Based on a Nested Horizon Map",
	booktitle = "Proc. ACM Symposium on Applied Computing (SAC), Phoenix Civic Plaza",
	year = "1994",
	editor = "E. Deaton and D. Oppenheim and J. Urban and H. Berghel",
	pages = "318-322",
	topic = {visibility}} 

@article{def94e,
	author = "L. De Floriani and P. Magillo",
	title = "Visibility Algorithms on Triangulated Terrain Models", 
	journal = "International Journal of Geographic Information Systems",
	volume = "8", 
	number = "1", 
	year = "1994",
	publisher = "Taylor \& Francis, London", 
	pages = "13-41",
	topic = {visibility}}

@inproceedings{def94f,
	author = "L. De Floriani and P. Magillo",
	title = "Computing Point Visibility on a Terrain Based on a Nested Horizon Map",
	booktitle = "Proc. ACM Symposium on Applied Computing",
	year = "1994",
	editor = "E. Deaton and D. Oppenheim and J. Urban and H. Berghel", 
	pages = "318-322",
	topic = {visibility}} 

@article{def94g,
	author = "L. De Floriani and C. Montani and R. Scopigno",
	title = "Parallelizing visibility computations on triangulated terrains",
	journal = "Int.Journal Geographic Information Systems",
	volume = "8",
	number = "4",
	year = "1994",
	topic = {visibility}}

@article{def95,
	author = "L. De Floriani and P. Magillo",
	title = "Horizon Computation on a Hierarchical Terrain Model",
	journal = "The Visual Computer: An International Journal of Computer Graphics",
	volume = "11",
	year = "1995",
	publisher = "Springer Verlag, New York",
	pages = "134-149",
	topic = {visibility}}

@inproceedings{dev86,
	author = "F. Devai",
	title ="Quadratic bounds for hidden line elimination",
	booktitle = "Proc. 2nd ACM Symposium on Computational Geometry, 
			Yorktown Heights, New York",
	year = "1986",
	publisher = "ACM Press, New York",
	pages = "269-275",
	topic = {visibility}} 

@TechReport{dev90,
	author = "O. Deviller and S. Meiser and M. Teillaud",
	title = "Fully Dynamic {D}elaunay
             triangulation in logarithmic Expected Time per Operation",
	institution = "Institut National de Recherche en Informatique et
                 Automatique (National Institute for Research in
                 Computer and Control Sciences) -- France",
	number = "RR-1349",
	year = "1990",
	month = "December",
	topic = {computational geometry},  
	url =          "ftp://ftp.inria.fr/INRIA/tech-reports/RR-1415.ps.Z"}

@inproceedings{dic91,
	author = "S.J. Dickinson and A. Rosenfeld and A. P. Pentland",
	title = "Primitive-Based Shape Modeling and Recognition", 
	booktitle = "Proceedings Workshop on Visual Form",  
	address = "Capri", 
	year = "1991", 
	pages = "213-229",
	topic = {CAD}}

@article{dob89,
	author = "D. \ Dobkin and  M. \ Laszlo",
	title = "Primitives for the Manipulation of Three-Dimensional
			 Subdivisions",
	journal = "Algorithmica",
	volume = "5",
	number = "4",
	year = "1989",
	pages = "3-32",
	topic = {computational geometry}}

@article{dre88,
	author = "R. A. Drebin and  L. Carpenter and P. Hanrahan",
	title = "Volume Rendering",
	journal = "ACM SIGGRAPH Computer Graphics",
	volume = "22",
	number = "4",
	pages = "65-74",
	year = "1988",
	topic = {volumetric visualization}}

@inproceedings{dry79,
	author = "R. L. Drysdale",
	title = "Generalized {V}oronoi Diagrams and Geometric Searching",
	booktitle = "Ph.D Thesis",
	address = "Dept. Computer Science, Stanford University",
	year = "1979",
	topic = {computational geometry}}

@article{dyn90,
	author = "N. Dyn and D. Levin and S. Rippa", 
	title = "Data Dependent Triagulations for Piecewise Linear Interpolation", 
	journal = "IMA Journal of Numerical Analysis", 
	volume = "10",
	number = "5",
	year = "1990",
	pages = "137-154",
	topic = {gis}}

@book{ede87,
	author = "H. Edelsbrunner",
	title = "Algorithms in Combinatorial Geometry",
	publisher = "Springer-Verlag",
	year = "1987",
	topic = {computational geometry}}

@article{ede89a,
   author = "H. Edelsbrunner",
   title = "The upper envelope of piecewise linear functions:
		   tight bounds on the number of faces",
   journal = "Discrete and Computational Geometry",
   volume = "4",
   year = "1989",
   publisher = "Springer International, New York",
   pages = "337-343",
	topic = {visibility}} 

@article{ede89b,
	author = "H. Edelsbrunner and L.J. Guibas and M. Sharir",
	title = "The upper envelope of piecewise linear functions:
             algorithms and applications",
	journal = "Discrete and Computational Geometry",
	volume = "4",
	year = "1989",
	publisher = "Springer International, New York",
	pages = "311-336 ",
	topic = {visibility}} 

@Article{ede90,
	author = "H. Edelsbrunner and F. P. Preparata and D. B. West",
	title = "Tetrahedrizing point sets in three dimensions",
	journal = "Journal of Symbolic Computing",
	volume = "10",
	pages = "335-347",
	year = "1990",
	topic = {computational geometry}}

@Article{ede93,
	author = "H. Edelsbrunner and T.S. Tan",
	title =  "An Upper Bound for Conforming {D}elaunay Triangulations",
	journal = "Discrete and Computational Geometry" ,
	volume = "10",
	pages = "197-213",
	year = "1993",
	topic = {computational geometry}}

@inproceedings{fal92, 
	author = "B. Falcidieno and O. Ratto",  
	title = "Two-Manifold Cell-Decomposition of R-Set",  
	booktitle = "Proceedings Eurographics $'92$, 11, 3", 
	year = "1992", 
	pages = "391-404",
	topic = {CAD}}

@article{fau90, 
	author = "O.D. Faugeras and E. Le Bras-Mehlman and J.D. Boissonnat",  
	title = "Representing Stereo Data with the {D}elaunay Triangulation", 
	journal = "Artificial Intelligence",  
	volume = "44", 
	year = "1990",  
	pages = "41-89",
	topic = {CAD}}

@article{fer91,                     
 	author = "V. Ferrucci and A. Paoluzzi", 
	title = "Extension and Boundary Evaluation for Multidimensional Polyhedra",
	journal = cad, 
	volume = "23", 
	number = "1", 
	year = "1991", 
	pages = "40-50",
	topic = {CAD}}

@article{fly91,  
	author = "P.J. Flynn and A.K. Jain", 
	title = "{CAD}-based Computer Vision: From {CAD} Models to Relational Graphs", 
	journal = "IEEE Transaction on P.A.M.I.", 
	volume = "13", 
	number = "2", 
	month = feb, 
	year = "1991", 
	pages = "114-132",
	topic = {CAD}}

@inproceedings{fol94,
	author = "T.A. Foley and G.M. Nielson", 
	title = "Modeling of Scattered Multivariate Data",
	booktitle = "Proceedings Eurographics'94",
	address =  "Oslo (Norway)",
	month = sep,
	year = "1994",
	pages = "38-59",
	topic = {gis}}
	
@article{fow79,
	author = "R.J. Fowler and J.J. Little", 
	title = "Automatic extraction of irregular network digital terrain models", 
	journal = "Computer \& Graphics", 
	volume = "13",
	number = "3",
	year = "1979",
	pages = "199-207",
	topic = {gis}}

@article{fra80,
	author = "W.R. Franklin",
	title = "A linear-time exact hidden surface algorithm",
	journal = "Computer Graphics",
	volume = "14",
	number = "3",
	year = "1980",
	pages = "117-123",
	topic = {visibility}}

@article{fra86,
	author = "W.R. Franklin and V. Akman",
	title = "Reconstructing visible regions from visible segments",
	journal = "BIT",
	volume = "26", 
	year = "1986",
	pages = "430-441",
	topic = {visibility}}

@inproceedings{fra90,
	author = "W.R. Franklin and M.S. Kankanhalli",
	title = "Parallel object-space hidden surface removal",
	booktitle = "Proc. SIGGRAPH",
	year = "1990",
	pages = "87-94",
	topic = {visibility}}

@incollection{fra91,
	author = "A. Frank", 
	title = "Design of cartographic databases",
	booktitle = "Advances in Cartography",
	editor = "J.C. Muller",
	publisher = "Elsevier",
	year = "1991",
	pages = "5-45",
	topic = {gis}} 

@article{fra94,
	author = "A.U. Frank and S. Timpf", 
	title = "Multiple representations for cartographic objects in a multi-scale 
			tree - An intelligent graphical zoom", 
	journal = "Computer \& Graphics", 
	volume = "18",
	number = "6",
	year = "1994",
	pages = "823-829",
	topic = {gis}}

@incollection{fre80,  
	author = "H. Freeman and I. Chakravarty", 
	title = "The Use of Characteristic Views in the Recognition of 
    	      Three-Dimensional Objects",
	booktitle = "Pattern Recognition in Practice", 
	editor = "E. Gelsema and L. Kanal",
	publisher = "North-Holland Publishing Co.", 
	address = "Amsterdam", 
	year = "1980",
	topic = {CAD}}

@article{gal89,
	author = "R. S. Gallagher and J. Nagtegaal",
	title = "An efficient visualization technique for finite elements
	models of the other coarse volumes",
	journal = "ACM Computer Graphics",
	volume = "23",
	number = "3",
	pages = "185-194",
	year = "1989",
	topic = {volumetric visualization}}
		
@article{gar90,
	author = "M. P. Garrity",
	title = "Raytracing irregular volume data",
	journal = "ACM Computer Graphics",
	volume = "24",
	number = "5",
	pages = "35-40",
	year = "1990",
	topic = {volumetric visualization}}

@article{gig90,
	author = "Z. Gigus and  J. Malik", 
	title = "Computing the Aspect Graph for Line Drawings of 
			Polyhedral Objects", 
	journal = "IEEE Transaction on P.A.M.I.",
	volume = "12", 
	number = "2", 
	month = feb,
	year = "1990", 
	pages = "113-122",
	topic = {CAD}}

@article{gme90,
	author = "R.H.J. Gmelig Meyling and P.R. Pluger", 
	title = "Smooth interpolation to scattered data by bivariate 
			piecewise polynomia of odd degree", 
	journal = "Computer Aided Geometric Design", 
	volume = "7",
	year = "1990",
	pages = "439-458",
	topic = {gis}}

@article{gom79,
	author = "D. Gomez and A. Guzman", 
	title = "Digital model for three-dimensional surface representation", 
	journal = "Geo-Processing", 
	volume = "1",
	year = "1979",
	pages = "53-70",
	topic = {gis}}

@InProceedings{gon91,
 	author = "T. Gonzalez and M. Razzazi",
 	title = "Properties and algorithms for constrained {{D}elaunay}
			triangulations",
 	booktitle = "Proceedings 3rd Canadian Conference on Computational
			Geometry",
 	year = "1991",
 	pages = "114-117",
	topic = {computational geometry}}

@article{goo89,
	author ="M.F. Goodchild and J. Lee",
	title ="Coverage problems and visibility regions on topographic surfaces", 
	journal = "Annals of Operation Research",
	volume = "20",
	year = "1989",
	pages = "175-186",
	topic = {visibility}} 

@inproceedings{goo87,
	author = "M.T. Goodrich",
	title ="A Polygonal Approach to Hidden Line Elimination",
	booktitle = "Proc. 25th Allerton Conference on Communication, Control and Computing",
	year = "1987",
	pages = "849-858",
	topic = {visibility}}

@article{goo92a,
	author = "M.T. Goodrich",
	title ="A Polygonal Approach to Hidden Line and Hidden Surface Elimination",
	journal = "Graphical Models and Image Processing",
	volume = "54",
	number = "1",
	year = "1992",
	pages = "112",
	topic = {visibility}}

@article{goo92b,
	author = "M.F. Goodchild and Y. Shiren", 
	title = "A hierarchical spatial data structure for global 
			geographic information systems", 
	journal = "CVGIP - Graphical Models and Image Processing", 
	volume = "54",
	number = "1",
	year = "1992",
	topic = {gis}}

@Article{gui85,
	author = " L. \ Guibas and J. Stolfi",
	title = "Primitives for the Manipulation of General Subdivisions
                 and Computation of {V}oronoi Diagrams",
	journal = "ACM Transaction on Graphics" ,
	volume = "4",
	pages = "75-123",
	year = "1985",
	topic = {computational geometry, CAD}}

@incollection{gui91,
	author = "L. \ Guibas",
	title = "",
	booktitle = "Scientific Visualization of Physical Phenomena",
	editor = "N. M. Patrikalakis",
	publisher = "Springer-Verlag",
	year = "1991",
	pages = "45-49",
	topic = {computational geometry}}

@incollection{gur90,  
	author = "E.L. Gursoz and Y. Choi and F.B. Prinz", 
	title = "Vertex-Based Representation of Non-Manifold Boundaries",
	booktitle = "Geometric Modeling for Product Engineering", 
	editor = "M.J. Wozny and J.U. Turner and K. Preiss",
	publisher = "Elsevier Science Publishers B.V.", 
	address = "North Holland", 
	year = "1990", 
	pages = "107-130",
	topic = {CAD}}

@article{gut87,
	author = "R.H. Guting and T. Ottmann",
	title = "New algorithms for special cases of the hidden line elimination problem",
	journal = "Computer Vision, Graphics, and Image Processing",
	volume = "40",
	year = "1987",
	pages = "188-204",
	topic = {visibility}}

@inproceedings{hab91,
	author = "R. B. Haber and B. Lucas and  N. Collins",
	year = "1991",
	title = "A data model for scientific visualization with provision
	for regular and irregular grids",
	booktitle = "Proceedings Visualization '91",
	pages = "298-305",
	topic = {volumetric visualization}}
		
@article{han89,          
	author = "C. Hansen and T.C. Henderson", 
	title = "{CAGD}-based Computer Vision", 
	journal = "IEEE Transaction on P.A.M.I.", 
	volume = "11", 
	number = "11", 
	month = nov, 
	year = "1989", 
	pages = "1181-1193",
	topic = {CAD}}

@inproceedings{hei91,
	author = "J.A. Heisserman",     
	title = "A Generalized {E}uler-{P}oincar\`{e} Equation",
	booktitle = "Proceedings ACM Symposium on Solid Modeling Foundations	
				and {CAD}/{CAM} Applications", 
	address = "Austin, Texas", 
	month = jun, 
	year = "1991", 
	pages="533",
	topic = {CAD}}

@article{hen85,
	author = "M.R. Henderson and D.C. Anderson",
	title = "Computer Recognition and Extraction of form Features: 
			a {CAD}/{CAM} Link",
	journal = "Computers in Industry",  
	volume = "5",  
	number = "4", 
	year = "1985", 
	pages = "329-339",
	topic = {CAD}}

@article{her89,
	author = "J. Hershberger",
	title = "Finding the Upper Envelope of $n$ Line Segments in ${O}(n \log n)$ time",
	journal = "Information Processing Letters",
	volume = "33",
	year = "1989",
	pages = "169-174",
	topic = {visibility}}

@inproceedings{ike88, 
	author = "K. Ikeuchi and T. Kanade", 
	title = "Automatic Generation of Object Recognition Programs", 
	booktitle = "Proceedings IEEE", 
	volume = "76", 
	number = "8", 
	month = aug, 
	year = "1988", 
	pages = "1016-1035",
	topic = {CAD}}

@incollection{jac80,  
	author = "C.L. Jackins and S.L. Tanimoto", 
	title = "Octrees and Their Use in Representing Three-Dimensional Objects", 
	booktitle = "Solid Modeling by Computers: from Theory to Applications", 
	publisher = "Plenum", 
	address = "New York", 
	year = "1984",
	topic = {CAD}}

@article{jai88,
	author = "A.K. Jain and R.L. Hoffman", 
	title = "Evidence-Based Recognition of 3-{D} Objects", 
	journal = "IEEE Transaction on P.A.M.I.", 
	volume = "10", 
	number = "6", 
	month = nov, 
	year = "1988", 
	pages = "783-802",
	topic = {CAD}}

@Article{joe91,
	author = "B. Joe",
	title = "Construction of three-dimensional  {D}elaunay
			triangulations using local transformations",
	journal = "Computer Aided Geometric Design",
	volume = "8",
	pages = "123-142",
	year = "1991",
	topic = {computational geometry}}

@Article{joe93,
	author = "B. Joe and A. Wang",
	title = "Duality of Constrained {V}oronoi Diagrams and {D}elaunay Triangulations",
	journal = "Algorithmica",
	volume = "9",
	pages = "142-155",
	year = "1993",
	publisher = "Springer-Verlag",
	address = "New York",
	topic = {computational geometry}}

@article{jos88, 
	author = "S.B. Joshi and T.C. Chang",
	title = "Graph-Based Heuristic for Recognition of Machined Features from 
			a 3-{D} Solid Model", 
	journal = cad,
	volume = "20", 
	number = "2", 
	year = "1988", 
	pages = "58-66",
	topic = {CAD}}

@InProceedings{kao92,
	author =  "T.C. Kao and D.M. Mount",
	title = "Incremental construction and dynamic maintenance of
			constrained {D}elaunay triangulations",
	booktitle = "Proceedings 4th Canadian Conference on Computational Geometry",
	year = "1992",
	pages = "170-175",
	topic = {computational geometry}}

@inproceedings{kat91,
	author ="M.J. Katz and M.H. Overmars and M. Sharir",
	title ="Efficient hidden surface removal for objects with small union size",
	booktitle = "Proc. 7th ACM Symposium on Computational Geometry",
	year = "1991",
	publisher = "ACM Press, New York",
	pages = "31-40",
	topic = {visibility}} 

@inproceedings{ken86,  
	author = "E.W. Kent and O. Schneir and T.H. Hong", 
	title = "Building Representations from Fusions of Multiple Views", 
	booktitle = "Proceedings IEEE Conf. Robotics and Automation", 
	addres = "San Francisco, CA", 
	month = apr, 
	year = "1986", 
	pages = "1634-1639",
	topic = {CAD}}

@article{koe76,  
	author = "J.J. Koenderink and A.J. van Doorn", 
	title = "The Singularities of the Visual Mapping", 
	journal = "Biol. Cybern.", 
	volume = "24",
	year = "1976", 
	pages = "51-59",
	topic = {CAD}}

@article{koe79,  
	author = "J.J. Koenderink and A.J. van Doorn", 
	title = "The Internal Representation of Solid Shape with Respect 
			to Vision", 
	journal = "Biol. Cybern.", 
	volume = "32", 
	year = "1979", 
	pages = "211-216",
	topic = {CAD}}

@article{kor87,  
	author = "M.R. Korn and C.R. Dyer", 
	title = "3-{D} Multiview Object Representations for Model-Based Recognition", 
	journal = "Pattern Recognition", 
	volume = "20", 
	number = "1", 
	year = "1987", 
	pages = "91-103",
	topic = {CAD}}

@inproceedings{kra90, 
	author = "F.C. Krause and A. Ulbrich and F.H. Vosgerau",
	title = "Feature-based Approach for the Integration of Pesing and 
			Process Planning Systems",
	booktitle = "Proceedings IFIP 5.2 Workshop on Geometric Modeling",
	address = "Rensselaerville, New York", 
	month = jun, 
	year = "1990",
	topic = {CAD}}

@article{lau91,
	author = "D. Laur and P. Hanrahan",
	title = "Hierarchical splatting: a progressive refinement
	algorithm for volume rendering",
	journal = "ACM SIGGRAPH Computer Graphics",
	volume = "25",
	number = "4",
	pages = "285-288",
	year = "1991",
	topic = {volumetric visualization}}

@TechReport{lau94,
	author = "A. Laurentini",
	title = "Topological Recognition of Polyhedral Objects from 
		Multiple Views", 
	institution = "Polytechnic of Torino, Italy", 
	year = "1994",
	topic = {CAD}}

@Article{lee86,
	author = "D. T. Lee and A. K. Lin",
	title =  "Generalized {D}elaunay Triangulation for Planar Graphs",
	journal = "Discrete and Computational Geometry" ,
	volume = "1",
	pages = "201-217",
	year = "1986",
	topic = {computational geometry}}

@article{lee87, 
	author = "Y.C. Lee and K.S. Fu",
	title = "Machine Understanding of {CSG}: Extraction and Unification of 
			 Manufacturing Features", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "7", 
	number = "1", 
	year = "1987", 
	pages = "20-32",
	topic = {CAD}}

@article{lee90, 
	author = "Y.C. Lee and Y.G. Shin",
	title = "Assembly Planning Based on Geometric Reasoning",
	journal = "Computer and Graphics", 
	volume = "14", 
	number = "2", 
	year = "1990", 
	pages = "237-250",
	topic = {CAD}}

@article{lee91a,
	author = "J. Lee", 
	title = "Comparison of existing methods for building triangular 
			irregular network models 
			of terrain from grid digital elevation models", 
	journal = "International Journal of Geographical Information Systems", 
	volume = "5",
	number = "3",
	year = "1991",
	pages = "267-285",
	topic = {gis}}

@article{lee91b,
	author = "J. Lee",
	title = "Comparison of existing methods for building triangular irregular 
			network models of terrain from grid digital elevation models",
	journal = "International Journal of Geographical Information Systems", 
	volume = "5",
	number = "3",
	year = "1991",
	pages = "267-285",
	topic = {visibility}}

@article{lee91c,
  author = "J. Lee",
  title = "Analyses of visibility sites on topographic surfaces",
  journal = "International Journal of Geographical Information Systems",
  volume = "5",
  year = "1991",
  publisher = "Taylor and Francis Ltd, London",
  pages = "413-429",
	topic = {visibility}}

@article{lev88,
	author = "M. Levoy",
	title = "Display of surfaces from volume data",
	journal = "IEEE C. G. \& A.",
	volume = "8",
	number = "5",
	pages = "29-37",
	year = "1988",
	topic = {volumetric visualization}}

@article{lev90,
	author = "M. Levoy",
	title = "A hybrid raytracer for renderin polygon and volume data",
	journal = "IEEE C. G. \& A.",
	volume = "10",
	number = "2",
	pages = "33-40",
	year = "1990",
	topic = {volumetric visualization}}

@inproceedings{lev91,         
	author = "M.D. Levine and R. Bergevin and Q.L. Nguyen", 
	title = "Shape Description Using Geons as 3D Primitives", 
	booktitle = "Proceedings Workshop on Visual Form", 
	address = "Capri", 
	year = "1991", 
	pages = "363-377",
	topic = {CAD}}

@InProceedings{lie89,
	author = "P. Lienhardt",
	title = "Subdivisions of $n$-dimensional spaces and $n$-dimensional
			generalized maps",
	booktitle = "Proceedings 5th ACM Symposium on Computational Geometry",
	year = "1989",
	pages = "228-236",
	topic = {computational geometry}}
		
@article{lie91,     
	author = "P. Lienhardt",
	title = "Topological Models for Boundary Representations: a Comparison 
			with $n$-dimensional Generalized Maps",
	journal = cad, 
	volume = "23", 
	number = "1", 
	year = "1991", 
	pages = "59-82",
	topic = {CAD}}

@article{lor87,
	author = "W. E. Lorensen and H. E. Cline",
	title = "Marching cubes: a high resolution 3D surface construction algorithm",
	journal = "ACM Computer Graphics",
	volume = "21",
	number = "4",
	pages = "163-170",
	year = "1987",
	topic = {volumetric visualization}}		

@inproceedings{mag94,
	author = "P. Magillo and L. De Floriani",
	title = "Computing Visibility Maps on Hierarchical Terrain Models",
	booktitle = "Proc. 2nd ACM Symposium on Advances in GIS, Gaithersburg, Maryland, USA",
	year = "1994",
	topic = {visibility}}

@inproceedings{mag95,
	author = "P. Magillo and L. De Floriani and E. Bruzzone",
	title = "Updating visibility information on multiresolution terrain models",
	booktitle = "Proc. European Conference on  Spatial Information Theory (COSIT),
	Semmering near Vienna, Austria",
	year = "September 1995",
	topic = {visibility}}
 
@book{man87, 
	author = "{M. M\"antyl\"a}",
	title = "An Introduction to Solid Modeling", 
	publisher = "Computer Science Press", 
	address = "Rockville, MD", 
	year = "1987",
	topic = {CAD}}

@inproceedings{mar78,        
	author = "D. Marr and K.H. Nishihara", 
	title = "Representation and Recognition of the Spatial Organization of 
			Three-Dimensional Shape", 
	booktitle = "Proc. R. Soc. Lond. B",  
	volume = "200", 
	year = "1978", 
	pages = "269-294",
	topic = {CAD}}

@article{mar90, 
	author = "M. Marefat and R.L. Kashyap",   
	title = "Geometric Reasoning for Recognition of 3D Object Features", 
	journal = "IEEE Transactions on Pattern Analysis and Machine 
				Intelligence", 
	volume = "12", 
	number = "10", 
	year = "1990", 
	pages = "946-965",
	topic = {CAD}}

@inproceedings{mau91,             
	author = "A. Maulik",  
	title = "An Efficient Intersection Algorithm for Polyhedral Cellular 
			Decompositions", 
	booktitle = "Proceedings First ACM Symposium on Solid Modeling 
				Foundations and {CAD}/{CAM} Applications", 
	month = jun, 
	year = "1991",
	topic = {CAD}}

@phdthesis{mau92,
	author = "M. Maulik",  
	title = "A Graph-Based Approach to Solid Modeling",  
	school = "ECSE Dept., Rensselaer Polytechnic Institute, Troy, NY",
	month = may,
	year = "1992",
	topic = {CAD}}

@article{max90,
	author = "N. Max and P. Hanrahan and R. Crawfis",
	title = "Area and volume coherence for
			efficient visualization of 3D scalar function",
	journal = "San Diego Workshop on Volume Visualization,
				Computer Graphics",
	volume = "24",
	number = "5",
	pages = "27-33",
	year = "1990",
	topic = {volumetric visualization}}

@article{mck87,
	author = "M. McKenna",
	title = "Worst case optimal hidden surface removal",
	journal = "ACM Transactions on Graphics",
	volume = "6", 
	year = "1987",
	pages = "19-28",
	topic = {visibility}}

@article{mil92,
	author = "K. Mills and G. Fox and R. Heimbach",
	title = "Implementing an intervisibility analysis model 
				on a parallel computing system",
	journal = "Computers \& Geosciences",
	volume = "18",
	number = "8",
	pages = "1047-1054",
	year = "1992",
	publisher = "Pergamon Press Ltd, Great Britain",
	topic = {visibility}}

@inproceedings{mul89,
	author = "K. Mulmuley",
	title ="An efficient algorithm for hidden surface removal",
	booktitle = "Proc. ACM Symposium on Computer Graphics",
	volume = "23",
	year = "1989",
	publisher = "ACM Press, New York",
	pages = "379-388",
	topic = {visibility}} 

@inproceedings{mul91,
	author = "K. Mulmuley",
	title = "Hidden surface removal with respect to a moving point",
	booktitle = "Proc. STOC 1991",
	year = "1991",
	pages = "512-522",
	topic = {visibility}}
	
@book{mul94,
	author = "K. Mulmuley",
	title = "Computational Geometry: an Introduction through Randomized Algorithms",
	publisher = "Prentice Hall",
	address = "Englewood Cliffs, NJ",
	year = "1994",
	topic = {computational geometry}}
	
@inproceedings{mur90,      
	author = "S. Murabata and M. Higashi",
	title = "Non-manifold Geometric Modeling for Set Operations and Surface
			Operations", 	
	booktitle = "Proceedings IFIP 5.2 Workshop on Geometric Modeling",
	address = "Rensselaerville, New York", 
	month = jun, 
	year = "1990",
	topic = {CAD}}

@inproceedings{nac91, 
	author = "L.R. Nackman and V. Srinivasan", 
	title = "Point Placement for {D}elaunay Triangulation of Polygonal 
			Domains",
	booktitle = "Proceedings $3rd$ Canadian Conference on Computational 
				Geometry",
	year = "1991", 
	pages = "37-40",
	topic = {CAD}}

@article{nag94,
	author = "G. Nagy",
	title ="Terrain visibility",
	journal = "Computers and Graphics",
	volume = "18",
	number = "6",
	year = "1994",
	pages = "763-773",
	topic = {visibility}}

@article{nur85,
	author = "O. Nurmi",
	title = "A Fast Line-Sweep Algorithm for Hidden Line Elimination",
	journal = "BIT",
	volume = "25",
	year = "1985",
	pages = "466-472",
	topic = {visibility}} 

@book{oka92,
	author = "A. Okabe and B. Boots and K. Sugihara",
	title = "Spatial Tesselations - Concepts and Applications of {V}oronoi Diagrams",
	publisher = "Wiley Ed.",
	year = "1992",
	topic = {computational geometry, CAD}}

@article{olo91, 
	author = "A.A. Oloufa", 
	title = "Triangulation Applications in Volume Calculation", 
	journal = "Journal Comput. Civil Engrg.", 	
	volume = "5", 
	year = "1991", 
	pages = "103-119",
	topic = {CAD}}

@inproceedings{ove89,
	author = "M. Overmars and M. Sharir",
	title = "Output-sensitive hidden surface removal",
	booktitle = "Proc. 30th IEEE Symposium on Foundations of Computer Science",
	year = "1989",
	publisher = "IEEE Computer Society, Baltimora",
	pages = "598-603",
	topic = {visibility}} 

@article{ove92,
	author ="M. Overmars and M. Sharir",
	title ="A simple output-sensitive algorithm for hidden surface removal",
	journal = "ACM Transactions on Graphics",
	volume = "11",
	year = "1992",
	publisher = "ACM Press, New York",
	pages = "1-11",
	topic = {visibility}} 

@article{ove94,
	author = "M. Overmars and M. Sharir",
	title = "An improved technique for output-sensitive hidden surface removal",
	journal = "Algorithmica",
	volume = "11",
	number ="5",
	year = "1994",
	publisher = "Springer Verlag, New York",
	pages = "469-484",
	topic = {visibility}} 

@TechReport{pra85, 
	author = "M. Pratt and P.R. Wilson", 
	title = "Requirements for Support of Form Features in a Solid Modelling 
			System", 
	institution = "Geometric Modelling Project, CAMI", 
	year = "1985",
	topic = {CAD}}

@TechReport{pla87,
	author = "H. Plantinga and C. Dyer", 
	title = "The Aspect Representation",
	institution = "Dep. Comput. Sci., University Wisconsin-Madison", 
	number = "CSTR-683", 
	month = jan, 
	year = "1987",
	topic = {CAD}}

@incollection{pel93,
	author = "M. Pellegrini",
	title = "Repetitive hidden surface removal for polyhedral scenes",
	booktitle = "Lecture Notes in Computer Science",
	volume = "709",
	year = "1993",
	publisher = "Springer Verlag, Berlin New York",
	pages = "541-552",
	topic = {visibility}}

@book{pre85,
	author = "F.P. Preparata and M.I. Shamos",
	title = "Computational Geometry: an Introduction",
	publisher = "Springer-Verlag",
	year = "1985",
	topic = {computational geometry}}	

@incollection{pre92,
	author = "F.P. Preparata and J.S. Vitter",
	title = "A simplified technique for hidden-line elimination in terrains",
	booktitle = "Lecture Notes in Computer Science",
	volume = "577",
	year = "1992",
	publisher = "Springer Verlag, Berlin New York",
	pages = "135-144",
	topic = {visibility}}

@incollection{pup95,
	author = "E. Puppo and G. Dettori", 
	title = "Towards a formal model for multiresolution spatial maps",
	booktitle = "Advances in Spatial Databases",
	editor = "Max J. Egenhofer, John R. Herring",
	publisher = "Springer-Verlag, Lecture Notes in Computer Science, N.951",
	year = "1995",
	topic = {gis}}

@article{qua90,
	author = "E. Quak and L.L.  Schumaker", 
	title = "Cubic Spline Fitting  using Data Dependent Triangulations", 
	journal = "Computer Aided Geometric Design", 
	volume = "7",
	year = "1990",
	pages = "293-301",
	topic = {gis}}

@inproceedings{rei88,
	author = "J.H. Reif and S. Sen",
	title = "An efficient output-sensitive hidden-surface removal algorithm
             and its parallelization",
	booktitle = "Proc. 4th ACM Symposium on Computational Geometry, Urbana",
	year = "1988",
	publisher = "ACM Press, New York",
	pages = "193-200",
	topic = {visibility}}

@article{req80, 
	author = "A.A.G. Requicha", 
	title = "Representations of Rigid Solids: Theory, Methods, and Systems", 
	journal = "ACM Computing Surveys", 
	volume = "12",
	number = "4", 
	year = "1980",  
	pages = "437-464",
	topic = {CAD}}

@article{req82, 
	author = "A.A.G. Requicha and H.B. Voelcker", 
	title = "Solid Modeling: a Historical Summary and Contemporary 
			Assessment", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "2", 
	number = "2", 
	month = mar, 
	year = "1982", 
	pages = "9-24",
	topic = {CAD}}

@article{req83, 
	author = "A.A.G. Requicha and H.B. Voelcker",
	title = "Solid Modeling: Current Status and Research Directions", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "3", 
	number = "7", 
	month = oct, 
	year = "1983", 
	pages = "25-37",
	topic = {CAD}}

@article{rey87,
	author = "R. A. Reynolds and D. Gordon and L. S. Chen",
	title = "A dynamic screen technique for shaded graphics display of
		 slice-represented objects",
	journal = "Computer Graphics and Image Processing",
	volume = "38",
	pages = "275-298",
	year = "1987",
	topic = {volumetric visualization}}	

@article{rip90,
	author = "S. Rippa", 
	title = "Minimal roughness property of the {D}elaunay triangulation", 
	journal = "Computer Aided Geometric Design", 
	volume = "7",
	number = "7",
	year = "1990",
	pages = "489-497",
	topic = {gis}}

@article{rip92,
	author = "S. Rippa", 
	title = "Adaptive Approximation by Piecewise Linear 
			Polynomials on Triangulations of Subsets of scattered Data", 
	journal = "SIAM Journal of Sci. Stat. Comput.", 
	volume = "13",
	number = "5",
	year = "1992",
	pages = "1123-1141",
	topic = {gis}}

@article{ros90a, 
	author = "J.R. Rossignac", 
	title = "Issues on Feature-Based Editing and Integration of Solid 
			Models",
	journal = "Computer Graphics", 
	volume = "14", 
	number = "2", 
	year = "1990", 
	pages = "149-172",
	topic = {CAD}}

@incollection{ros90b,              
	author = "J.R. Rossignac and M.A. O'Connor",
	title = "{SGC}: A Dimensional-Independent Model for Pointsets with 
			Internal Structures and Incomplete Boundaries",
	booktitle = "Geometric Modeling for Product Engineering", 
	editor = "M.J. Wozny and J.U. Turner and K. Preiss",
	publisher = "Elsevier Science Publishers B.V.",
	address = "North Holland", 
	year = "1990", 
	pages = "145-180",
	topic = {CAD}}

@article{ros91a,
	author = "J.R. Rossignac and A.A.G. Requicha",
	title = "Constructive Non-Regularized Geometry",
	journal = "Computer Aided Geometry", 
	volume = "23", 
	number = "1", 
	pages = "21-32", 
	year = "1991",
	topic = {CAD}}

@inproceedings{ros91b,
	author = "J.R. Rossignac", 
	title = "Through the Cracks of the Solid Modeling Milestone",
	booktitle = "Proceedings Eurographics'91 State of the Art Report", 
	pages = "23-109", 
	year = "1991",
	topic = {CAD}} 

@InProceedings{rup89,
	author = "J. Ruppert and R. Seidel",
	title = "On the Difficulty of Tetrahedralizing 3-Dimensional Non-Convex Polyhedra",
	booktitle = "Proceedings $5th$ ACM Symposium on Computational Geometry",
	year = "1989",
	pages = "380-393",
	topic = {computational geometry}}

@InProceedings{saa91,
	author = "A.  Saalfeld",
	title = "{D}elaunay Edge Refinements",
	booktitle = "Proceedings 3rd Canadian Conference on Computational Geometry",
	year = "1991",
	pages = "33-36",
	topic = {computational geometry}}

@article{sab88,
	author = "P. Sabella",
	title = "A rendering algorithm for visualizing 3d
				scalar field",
	journal = "ACM Computer Graphics",
	volume = "16",
	number = "2",
	pages = "187-260",
	year = "1988",
	topic = {volumetric visualization}}

@article{sak90,
	author = "H. Sakurai and D.C. Gossard",
	title = "Recognizing Shape Features in Solid Models", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "6", 
	month = sep,
	year = "1990", 
	pages = "22-32",
	topic = {CAD}}

@book{sam90a,
	author = "H.\ Samet",
	title = "The Design and Analysis of Spatial Data Structures",
	publisher = "Addison-Wesley",
	address = "Reading (MA)",
	year = "1990",
	topic = {computational geometry}}

@book{sam90b,
	author = "H.\ Samet",
	title = "Applications of Spatial Data Structures",
	publisher = "Addison-Wesley",
	address = "Reading (MA)",
	year = "1990",
	topic = {computational geometry}}

@inproceedings{sam92,
	author = "H.  Samet and R. Sivan", 
	title = "Algorithms for constructing quadtree surface maps",
	booktitle = "Proceedings 5th International Symposium on Spatial Data Handling",
	address =  "Charleston",
	month = aug,
	year = "1992",
	pages = "361-370",
	topic = {gis}}
	
@incollection{san90,
	author = "A. Sanderson and L.S. Homem de Mello",
	title = "Automatic Generation of Mechanical Assembly Sequences",
	booktitle = "Geometric Modeling for Product Engineering", 
	editor = "M.J. Wozny and J.U. Turner and K. Preiss",
	publisher = "Elsevier Science Publishers B.V.", 
	address = "North Holland", 
	year = "1990", 
	pages = "461-482",
	topic = {CAD}}

@inproceedings{sca90a,
	author = "L.L.  Scarlatos", 
	title = "An automatic critical line detector for digital elevation matrices",
	booktitle = "Proceedings 1990 ACSM-ASPRS Annual Convention",
	address =  "Denver (CO)",
	year = "1990",
	pages = "43-52",
	topic = {gis}}

@article{sca92,
	author = "L.L.  Scarlatos and T. Pavlidis", 
	title = "Hierarchical Triangulation Using Cartographic Coherence", 
	journal = "CVGIP: Graphical Models and Image Processing", 
	volume = "54",
	number = "2",
	year = "1993",
	pages = "147-161",
	topic = {gis}}

@inproceedings{sch81,
	author = "A. Schmitt",
	title = "Time and space bounds for hidden line and hidden surface algorithms",
	booktitle = "Proc. Eurographics 1981",
	year = "1981",
	publisher = "North Holland, Amsterdam", 
	pages = "43-56",
	topic = {visibility}} 

@article{sch93a,
	author = "L.L.  Schumaker", 
	title = "Triangulations in CAGD", 
	journal = "IEEE Computer Graphics \& Applications", 
	volume = "13",
	year = "1993",
	pages = "47-52",
	topic = {gis}}
	
@article{sch93b,
	author = "L.L.  Schumaker", 
	title = "Computing optimal triangulations using simulated annealing", 
	journal = "Computer Aided Geometric Design", 
	volume = "10",
	year = "1993",
	pages = "329-345",
	topic = {gis}}

@incollection{san90,
	author = "A. Sanderson and L.S. Homem de Mello",
	title = "Automatic Generation of Mechanical Assembly Sequences",
	booktitle = "Geometric Modeling for Product Engineering", 
	editor = "M.J. Wozny and J.U. Turner and K. Preiss",
	publisher = "Elsevier Science Publishers B.V.", 
	address = "North Holland", 
	year = "1990", 
	pages = "461-482",
	topic = {CAD}}

@inproceedings{shi90,
	author = "P. Shirley and A. A. Tuchman",
	title = "Polygonal Approximation to Direct Scalar Volume Rendering",
	booktitle = "Proceedings San Diego Workshop on Volume Visualization, 
				Computer Graphics",
	volume = "24",
	number = "5",
	pages = "63-70",
	year = "1990",
	topic = {volumetric visualization}}
		
@Article{slo93,
	author = "Sloan",
	title =  "A Fast Algorithm for Generating Constrained {D}elaunay Triangulations",
	journal = "Computers \& Structures",
	volume = "47",
	year = "1993",
	topic = {computational geometry}}

@article{tam84a, 
	author = "M. Tamminen and H. Samet", 
	title = "Efficient Octree Conversion by Connectivity Labeling", 
	journal = "Computer Graphics", 
	volume = "18", 
	number = "3", 
	month = jul, 
	year = "1984", 
	pages = "43-51",
	topic = {CAD}}

@article{tam84b,
	author = "M. Tamminen", 
	title = "Comment on Quad- and Octrees",
	journal = "Communications of the ACM", 
	volume = "27", 
	number = "3", 
	month = mar, 
	year = "1984", 
	pages = "248-249",
	topic = {CAD}}

@article{ten93,
	author = "Y.A. Teng and D. De Menthon and L.S. Davis",
	title = "Region-to-region visibility analysis using data parallel machines",
	journal ="Concurrency: Practice and Experience",
	volume = "5",
	number = "5",
	pages = "379-406",
	year = "1993",
	topic = {visibility}}

@article{ten95,
	author = "Y.A. Teng and D. Mount and E. Puppo and L.S. Davis",
	title = "Parallelizing an algorithm for visibility on polyhedral terrain",
	journal = "International Journal of Computational Geometry and Applications",
	publisher = "World Scientific Publishing Company",
	year = "1995, in print",
	topic = {visibility}}

@incollection{tim92,
	author = "S. Timpf and G.S. Volta and D.W. Pollock and M. Egenhofer", 
	title = "A conceptual model of wayfinding using multiple levels of abstraction",
	booktitle = "Theories and Methods of Spatio-Temporal Reasoning in Geographic Space",
	editor = "A.U. Frank, I. Campari and U. Formentini",
	publisher = "Springer-Verlag, Lecture Notes in Computer Science", 
	volume = "639",
	year = "1992",
	pages = "348-367",
	topic = {gis}} 

@article{ups88,
	author = "C. Upson and M. Keeler",
	title = "V-BUFFER: Visible Volume Rendering",
	journal = "ACM SIGGRAPH Computer Graphics",
	volume = "22",
	number = "4",
	pages = "59-64",
	year = "1988",
	topic = {volumetric visualization}}

@inproceedings{vel93,
	author = "R.C. Veltkamp", 
	title = "3{D} Computational Morphology", 
	booktitle = "Proceedings EUROGRAPHICS'93", 
	year = "1993", 
	pages = "115-127",
	topic = {CAD}}

@article{von87,
	author = "B. Von Herzen and A.H. Barr", 
	title = "Accurate triangulations of deformed, intersecting surfaces", 
	journal = "Computer \& Graphics", 
	volume = "21",
	number = "4",
	year = "1987",
	pages = "103-110",
	topic = {gis}}

@InProceedings{wan87,
	author = "C.A. Wang and L. Schubert",
	title = "An Optimal Algorithm for Constructing the {D}elaunay Triangulation 
			of a Set of Line Segments",
	booktitle = "Proceedings 3rd ACM Symposium on Computational Geometry",
	year = "1987",
	pages = "223-232",
	topic = {computational geometry}}

@inproceedings{wan90,  
	author = "R. Wang and H. Freeman", 
	title = "Object Recognition Based on Characteristic View Classes", 
	booktitle = "Proceedings $10th$ International Conference on Pattern 
				Recognition", 
	address = "Atlantic City, NJ", 
	month = "17-21 June", 
	year = "1990",
	topic = {CAD}} 

@inproceedings{wan91,  
	author = "R. Wang and H. Freeman", 
	title = "From Characteristic Views to Canonical Views", 
	booktitle = "Proceedings $6th$ International Conference on Image 
				Analysis and Processing", 
	address = "Como, Italy",  
	month = "4-6 September", 
	year = "1991",
	topic = {CAD}}     

@InProceedings{wan92,
	author = "C.A. Wang and Y.H. Tsin",
	title = "Efficiently updating constrained {D}elaunay triangulations",
	booktitle = "Proceedings 4th Canadian Conference on Computational Geometry",
	year = "1992",
	pages = "176-181",
	topic = {computational geometry}}

@Article{wan93,
	author = "C.A. Wang",
	title = "Efficiently Updating Constrained {D}elaunay Triangulations",
	journal = "BIT",
	pages = "238-252",
	volume = "33",
	year = "1993",
	topic = {computational geometry}}

@Article{wat81,
	author = "D. F. Watson",
	title = "Computing the $n$-dimensional {D}elaunay
			tesselation with applications to {V}oronoi polytopes",
	journal = "The Computer Journal",
	volume = "24",
	pages = "167-171",
	year = "1981",
	topic = {computational geometry}}
	
@article{wei77,
	author ="K. Weiler and P. Atherton",
	title ="Hidden surface removal using polygonal area sorting",
	year = "1977",
	journal = "Computer Graphics",
	volume = "11",
	publisher = "Sole, New York",
	topic = {visibility}} 

@article{wei85,
	author = "K. Weiler",
	title = "Edge-Based Data Structures for Solid Modeling in a 
			Curved-Surface Environment", 
	journal = "IEEE Computer Graphics and Applications", 
	volume = "5", 
	number = "1", 
 	month = jan, 
 	year = "1985", 
 	pages = "21-40",
	topic = {CAD}}

@phdthesis{wei86, 
	author = "K. Weiler",
	title = "Topological Structures for Geometric Modeling",
	school = "Department of Computer and System Engineering,
			Rensselaer Polytechnic Institute, Troy, NY", 
	month = aug,
	year = "1986",
	topic = {CAD}}

@article{wil91,
	author = "J.  Wilhelms and A.A. Van Gelder",
	title = "A coherent projection approach for direct volume rendering",
	journal = "ACM SIGGRAPH Computer Graphics",
	volume = "25",
	number = "4",
	pages = "275-284",
	year = "1991",
	topic = {volumetric visualization}}
		
@article{wil92a,
	author = "P. L. Williams",
	title = "Visibility Ordering Meshed Polyhedra",
	journal = "ACM Transaction on Graphics",
	volume = "11",
	number = "2",
	pages = "103-126",
	year = "1992",
	topic = {volumetric visualization}}
		
@inproceedings{wil92b,
	author = "P. L. Williams",
	year = "1992",
	title = "Interactive Splatting of Nonrectilinear Volumes",
	booktitle = "Proceedings IEEE Conference on Visualization",
	pages = "37-44",
	topic = {volumetric visualization}}

@article{wol87,
	author = "R.N. Wolfe and M.A. Wesley and J.C. Kyle and F. Gracer 
			 and W.J. Fitzgerald", 
	title = "Solid Modeling for Production Design",
	journal = "IBM Journal of Research and Development", 
	volume = "31", 
	number = "3", 
	year = "1987", 
	pages = "277-295",
	topic = {CAD}}

@article{woo85,           
	author = "T.C. Woo",
	title = "A Combinatorial Analysis of Boundary Data Structure Schemata",
	journal = "IEEE Computer Graphics and Applications", 
	volume = "5", 
	number = "3", 
	month = mar, 
	year = "1985", 
	pages = "19-27",
	topic = {CAD}}

@incollection{wu91,             
	author = "Wu Shin-Ting", 
	title = "Considerations about a Minimal Set of Non-Manifold Operators",
	booktitle = "Product Modeling for Computer Engeneering",  
	editor = "M.J. Wozny and J.U. Turner", 
	address = "North Holland",
	year = "1991",
	topic = {CAD}}

@inproceedings{yam91a,    
	author = "Y. Yamaguchi and F. Kimura",
	title = "Non-manifold Topology Model based on Coupling Entities",
	booktitle = "Proceedings ACM Symposium on Solid Modeling Foundations 
				and {CAD}/{CAM} Applications", 
	address = "Austin, Texas", 
	month = jun, 
	year = "1991", 
	pages = "537",
	topic = {CAD}}

@incollection{yam91b, 
	author = "Y. Yamaguchi and F. Kimura",
	title = "Geometric Modeling with Generalized Topology and 
			Geometry for Product Engineering", 
	booktitle = "Product Modeling for Computer-Aided Design",
	editor = "M.J. Wozny and J.U. Turner", 
	address = "North Holland",
	year = "1991",
	topic = {CAD}}

@article{zha93, 
	author = "S. Zhang and G.D. Sullivan and K.D. Baker",  
	title = "The Automatic Construction of a View-Independent Relational 
			Model for 3-{D} Object Recognition",  
	journal = "IEEE Transaction on P.A.M.I.", 
	volume = "15", 
	number = "6", 
	month = jun, 
	year = "1993", 
	pages = "531-544",
	topic = {CAD}} 

@Article{zho92,
	author = "J.M. Zhou and K.D. Zhou and K.R. Shao",
	title = "Automatic generation of 3D Meshes for Complicated Solids",
	journal = "IEEE transactions on magnetics",
	volume = "28",
	number = "2",
	month = "March",
	year = "1992",
	publisher =    "Springer-Verlag",
	address =      "New York",
	topic = {computational geometry}}