R. Khare, and T. Çelik. WWW '06: Proceedings of the 15th international conference on World Wide Web, page 865-866. New York, NY, USA, ACM Press, (2006)
S. Auer, S. Dietzold, and T. Riechert. Proceedings of 5th International Semantic Web Conference 2006, volume 4273 of Lecture Notes in Computer Science, page 736-749. Springer, (2006)
D. Tsarkov, and I. Horrocks. Proc. of the Int. Joint Conf. on Automated Reasoning (IJCAR 2006), volume 4130 of Lecture Notes in Artificial Intelligence, page 292--297. Springer, (2006)
Y. Sure, S. Bloehdorn, P. Haase, J. Hartmann, and D. Oberle. Proceedings of the 12th Portuguese Conference on Artificial Intelligence - Progress in Artificial Intelligence (EPIA 2005), volume 3803 of LNCS, page 218 - 231. Covilha, Portugal, Springer, (December 2005)