A. Averbakh, D. Krause, и D. Skoutas. The Semantic Web -- ISWC 2009: 8th International Semantic Web Conference, Chantilly, VA, USA, том 5823 из Lecture Notes in Computer Science, Springer, Berlin, (2009)
S. Bhiri, W. Gaaloul, M. Rouached, и M. Hauswirth. Advances in Web Semantics I: Ontologies, Web Services and Applied Semantic Web, том 4891 из Lecture Notes in Computer Science, Springer, Berlin, (2009)