A. Gangemi, N. Guarino, C. Masolo, A. Oltramari, и L. Schneider. Knowledge Engineering and Knowledge Management: Ontologies and the Semantic Web, том 2473 из Lecture Notes in Artificial Intelligence, Springer, Berlin, (2002)
Y. Gil, и V. Ratnakar. Proceedings of the 15th International Florida Artificial Intelligence Research Society Conference, стр. 413--418. Menlo Park, CA, AAAI Press, (2002)
J. Broekstra, A. Kampman, и F. van Harmelen. The Semantic Web -- ISWC 2002: First International Semantic Web Conference Sardinia, Italy, том 2342 из Lecture Notes in Computer Science, Springer, Berlin, (2002)