Paul Valckenaers John A. Sauter Carles Sierra Juan A. Rodríguez-Aguilar Applications and environments for multi-agent systems. 61-85 2007 14 Autonomous Agents and Multi-Agent Systems 1 http://dx.doi.org/10.1007/s10458-006-9002-5 db/journals/aamas/aamas14.html#ValckenaersSSR07