J. Broekstra, A. Kampman, and F. van Harmelen. The Semantic Web -- ISWC 2002: First International Semantic Web Conference Sardinia, Italy, volume 2342 of Lecture Notes in Computer Science, Springer, Berlin, (2002)
M. Winikoff. Multi-Agent Programming: Languages, Platforms and Applications, volume 15 of Multiagent Systems, Artificial Societies, and Simulated Organizations, chapter 7, Springer, New York, NY, (2005)