J. Angele, and M. Gesmann. Proceedings of the Second International Conference on Rules and Rule Markup Languages for the Semantic Web, Athens, GA, USA, page 58-66. (2006)
B. Guo, S. Satake, and M. Imai. IAT '06: Proceedings of the IEEE/WIC/ACM International Conference on Intelligent Agent Technology, Hong Kong, page 191-194. Washington, DC, USA, IEEE Computer Society, (2006)
B. Liu, H. Chen, and W. He. ICTAI '05: Proceedings of the 17th IEEE International Conference on Tools with Artificial Intelligence, Hong Kong, China, page 254-259. (2005)