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- Heraklion, Greece, (May 2005)
- Proc. E-Commerce and Web Technologies, Third International Conference, EC-Web 2002, 2455, Aix-en-Provence %, France, Springer, (September 2002)
- Proceedings of the AAAI Spring Symposium on Agent-Mediated Knowledge Management AMKM-03, Stanford, (March 2003)
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- Proc. E-Learn 2002: World Conference on E-Learning in Corporate, Government, Healthcare, \& Higher Education, Montreal, (October 2002)
