Oliver Zweigle Reinhard Lafrenz Thorsten Buchheim Uwe-Philipp Käppeler Hamid Rajaie Frank Schreiber Paul Levi Cooperative Agent Behavior Based on Special Interaction Nets. 651-659 2006 conf/ias/2006 IAS db/conf/ias/ias2006.html#ZweigleLBKRSL06