with : Alun Preece

7th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2008) — 12/05/2008–16/05/2008

4th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2005) — 25/07/2005–29/07/2005

8th International Workshop on Cooperative Information Agents (CIA 2004) — 27/08/2004–29/08/2004

3rd International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2004) — 19/07/2004–23/07/2004