J. Broekstra, A. Kampman, und F. van Harmelen. The Semantic Web - ISWC 2002. First International Semantic Web Conference, Sardinia, Italy, June 9-12, 2002, Proceedings, 2342, Seite 54-68. (2002)
M. Klein, D. Fensel, A. Kiryakov, und D. Ognyanov. Proc. of the 13th European Conf. on Knowledge Engineering and Knowledge Management (EKAW02) (Siguenza, Spain), Seite 197--212. (2002)
B. Smith, und C. Welty. Proceeding of the 2nd International Conference on Fortmal Ontology and Information Systems (FOIS 2001), Ogunquit, Maine, USA, (2001)
H. Lieberman, D. Smith, und A. Teeters. In Proceedings of the Workshop on Common Sense and Intelligent User Interfaces held in conjunction with the 2007 International Conference on Intelligent User Interfaces (IUI 2007), (2007)
X. Wu, L. Zhang, und Y. Yu. WWW '06: Proceedings of the 15th international conference on World Wide Web, Seite 417--426. New York, NY, USA, ACM Press, (2006)