Carole Bernon Massimo Cossentino Marie Pierre Gleizes Paola Turci Franco Zambonelli A Study of Some Multi-agent Meta-models. 62-77 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3382&spage=62 2004 conf/aose/2004 AOSE db/conf/aose/aose2004.html#BernonCGTZ04