Ralph Depke Jan Hendrik Hausmann Reiko Heckel Design of an Agent-Oriented Modeling Language Based on Graph Transformation. 106-119 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3062&spage=106 2003 conf/agtive/2003 AGTIVE db/conf/agtive/agtive2003.html#DepkeHH03