with : Juan Pavon

4th European Workshop on Multi-Agent Systems (EUMAS 2006) — 14/12/2006–15/12/2006

7th International Workshop “Engineering Societies in the Agents World VII” (ESAW 2006) — 06/09/2006–08/09/2006

Coordination Models, Languages and Applications. Special Track of the 2003 ACM Symposium on Applied Computing (CM 2003@SAC 2003) — 11/03/2003

Coordination Models, Languages and Applications. Special Track of the 2002 ACM Symposium on Applied Computing (CM 2002@SAC 2002) — 14/03/2002