1. Bibo ontology,
http://bibotools.googlecode.com/svn/bibo-ontology/trunk/doc/index.html
2. Foaf vocabulary specification 0.99,
http://xmlns.com/foaf/spec/
3. Gangemi, A., Lehmann, J., Catenacci, C.: Norms and plans as unification criteria for social collectives. In: Proc. of Dagstuhl Sem., vol. 07122, pp. 48–87 (2007)
4. Goczyła, K., Waloszek, A., Waloszek, W.: Contextualization of a dl knowledge base. In: Proc. DL 2007, Brixen/Bressanone, Italy (2007)
5. Goczyła, K., Waloszek, A., Waloszek, W.: A semantic algebra for modularized description logics knowledge bases. In: Proc. DL 2009, Oxford, United Kindgom (2009)