Clementini, E., Di Felice, P., (2000) Spatial Operators. ACM SIGMOD Record, 29 (3), pp. 31-38
Clementini, E., Di Felice, P., Hernández, D., (1997) Qualitative Representation of Positional Information. Artificial Intelligence, 95, pp. 317-356
Clementini, E., Di Felice, P., Van Oosterom, P., (1993) A Small Set of Formal Topological Relationships Suitable for End-User Interaction, in Advances in Spatial Databases - Third International Symposium, SSD '93, pp. 277-295. , D. Abel and B.C. Ooi, Editors. Springer-Verlag: Berlin
Dugat, V., Gambarotto, P., Larvor, Y., (1999) Qualitative Theory of Shape and Orientation, in Proc. of the 16th Int. Joint Conference on Artificial Intelligence (IJCAI'99)., pp. 45-53. , Stockolm, Sweden: Morgan Kaufmann Publishers
Egenhofer, M.J., Deriving the composition of binary topological relations (1994) Journal of Visual Languages and Computing, 5 (1), pp. 133-149
Egenhofer, M.J., Herring, J.R., (1991) Categorizing Binary Topological Relationships between Regions, Lines, and Points in Geographic Databases., , Department of Surveying Engineering, University of Maine, Orono, ME
Freksa, C., Using Orientation Information for Qualitative Spatial Reasoning (1992) Theories and Models of Spatio-Temporal Reasoning in Geographic Space, pp. 162-178. , A.U. Frank, I. Campari, and U. Formentini, Editors. Springer-Verlag: Berlin
Gapp, K.-P., (1995) Angle, Distance, Shape, and Their Relationship to Projective Relations., , in Proceedings of the 17th Conference of the Cognitive Science Society. Pittsburgh, PA
Gapp, K.-P., From Vision to Language: A Cognitive Approach to the Computation of Spatial Relations in 3D Space (1994) Proc. of the First European Conference on Cognitive Science in Industry., pp. 339-357. , Luxembourg
Goyal, R., Egenhofer, M.J., (2003) Cardinal Directions between Extended Spatial Objects., , IEEE Transactions on Knowledge and Data Engineering, in press
Hemández, D., Qualitative Representation of Spatial Knowledge (1994) Lecture Notes in Artificial Intelligence., LNAI 804. , Berlin: Springer-Verlag
Isli, A., (2004) Combining Cardinal Direction Relations and Other Orientation Relations in QSR. in AI&M 14-2004, Eighth International Symposium on Artificial Intelligence and Mathematics., , January 4-6, Fort Lauderdale, Florida
Kray, C., Blocher, A., Modeling the Basic Meanings of Path Relations (1999) Proc. of the 16th International Joint Conference on Artificial Intelligence (IJCAl-99)., pp. 384-389. , Stockolm, Sweden: Morgan Kaufmann Publishers
Kulik, L., A graded approach to directions between extended objects (2002) Proc. of the 2nd Int. Conf. on Geographic Information Science., pp. 119-131. , Boulder, CO: Springer
Kulik, L., Klippel, A., Reasoning about Cardinal Directions Using Grids as Qualitative Geographic Coordinates (1999) Spatial Information Theory. Cognitive and Computational Foundations of Geographic Information Science: International Conference COSIT'99, pp. 205-220. , C. Freksa and D.M. Mark, Editors. Springer
Moratz, R., Fischer, K., (2000) Cognitively Adequate Modelling of Spatial Reference in Human-Robot Interaction, pp. 222-228. , Proc. of the 12th IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2000. Vancouver, BC, Canada
(1998) OpenGIS Simple Features Specification for SQL.
Retz-Schmidt, G., (1988) Various Views on Spatial Prepositions., 9 (2), pp. 95-105. , AI Magazine
Schlieder, C., (1995) Reasoning about Ordering, in Spatial Information Theory: A Theoretical Basis for GIS - International Conference, COSIT'95, pp. 341-349. , A.U. Frank and W. Kuhn, Editors. Springer-Verlag: Berlin
Schmidtke, H.R., (2001) The House Is North of the River: Relative Localization of Extended Objects, in Spatial Information Theory. Foundations of Geographic Information Science: International Conference, COSIT 2001, pp. 415-430. , D.R. Montello, Editor. Springer
Scivos, A., Nebel, B., (2001) Double-Crossing: Decidability and Computational Complexity of A Qualitative Calculus for Navigation, in Spatial Information Theory. Foundations of Geographic Information Science: International Conference, COSIT 2001, pp. 431-446. , D.R. Montello, Editor. Springer
Vorwerg, C., Projective relations for 3D space: Computational model, application, and psychological evaluation (1997) Proc. of the 14th National Conference on Artificial Intelligence and 9th Innovative Applications of Artificial Intelligence Conference, AAAI 97, IAAI 97., pp. 159-164. , Providence, Rhode Island: AAAI Press / The MIT Press
Waller, D., (2000) Place Learning in Humans: the Role of Distance and Direction Information., 2, pp. 333-354. , Spatial Cognition and Computation
