Congress on Evolutionary Computation, Washington, DC, USA, July 1999.

Artificial Life VII, Portland, OR, USA, August 2000

Second International Conference on Virtual Worlds, Paris, July 2000.

Fifth International Conference on Autonomous Agents, Montreal, Canada, May 2001.

From Ant Colonies to Artificial Ants: 2nd International Workshop on Ant Algorithms. Brussels, Belgium, September 2000.

International Symposium on Artificial Life and Robotics (AROB), Tokyo, Japan, January 2001.

First International Conference on Evolutionary Multi-Criterion Optimization. Zurich, Switzerland; March 2001.

5th International Conference on Artificial Neural Networks and Genetic Algorithms. Prague, Czech Republic; April 2001.

International Conference on Intelligent Robots and Systems. Takamatsu, Japan; October 2000.

The Sixth International Conference on Parallel Problem Solving from Nature. Paris, September 2000.