Innovative concepts for agent-based systems : first International Workshop on Radical Agent Concepts, WRAC 2002, McLean, VA, USA, January 16-18, 2002 : revised papers - Truszkowski, Walt, 1939-; Rouff, Chris, 1960-; Hinchey, Michael G. (Michael Gerard), 1969- (Lecture notes in computer science ;, 2003)