1. Bateman, J. A. 1995, On the Relationship Between Ontology Construction and Natural Language: a Socio-Semiotic View. International Journal of Human-Computer Studies, 43: 929–944.
2. Bateman, J. A., Kasper, R. T., Moore, J. D., and Whitney, R. A. 1990, A General Organization of Knowledge for Natural Language Processing: the PENMAN upper model. USC/Information Sciences Institute, Marina del Rey, CA.
3. Brachman, R. 1983, What IS-A Is and Isn’t: An Analysis of Taxonomic Links in Semantic Networks. IEEE Computer, 16(10): 30–36.
4. Casati, R. and Varzi, A. 1999, Parts and Places. The Structure of Spatial Representation. MIT Press, Cambridge, MA.
5. Fine, K. 1995, Ontological Dependence. Proceedings of the Aristotelian Society, 95: 269–90.