1. Categorizing Binary Topological Relationships between Regions, Lines, and Points in Geographic Databases;Egenhofer,1990
2. RCC*-9 and CBM*;Clementini,2014
3. Spatial Relations between Classes as Integrity Constraints
4. Ontological Impedance in 3D Semantic Data Modeling;Clementini,2010
5. Towards a typology of spatial relations and properties for urban applications;Bucher,2012