1. Baader, F., Calvanese, D., et al.: The Description Logic Handbook: Theory, Implementation, and Applications. University Press, Cambridge (2003)
2. de Keizer, N.F., Abu-Hanna, A., et al.: Analysis and design of an ontology for intensive care diagnoses. Methods of Information in Medicine 38(2), 102–112 (1999)
3. Haarslev, V., Möller, R.: High Performance Reasoning with Very Large Knowledge Bases. In: International Workshop in Description Logics 2000 (DL 2000), Aachen, Germany (2000)
4. Horrocks, I., Sattler, U., et al.: Practical reasoning for very expressive description logics. Logic Journal of the IGPL 8(3), 239–263 (2000)
5. Minsky, M.: A framework for representing knowledge. In: Haugeland, J. (ed.) Mind Design. The MIT Press, Cambridge (1981)