Vicente Botti is head of the Group de Tecnologia Informatica - Inteligencia Artificial (GTI-IA) at the Universidad Politecnica de Valencia. His research interests are real-time artificial intelligence and multiagent systems. Adriana Giret has a PhD in Computer Science and lectures at the Universidad de Valencia, where she works within the Departamento de Sistemas Informaticos y Computacion. Her research interests are multiagent systems; holonic manufacturing systems; and agent-supported simulation for manufacturing systems.