Ahmed Hadj Kacem Amira Regayeg Mohamed Jmaiel ForMAAD: A formal method for agent-based application design. 435-454 2007 5 Web Intelligence and Agent Systems 4 http://iospress.metapress.com/openurl.asp?genre=article&issn=1570-1263&volume=5&issue=4&spage=435 db/journals/wias/wias5.html#KacemRJ07