Maria Bergholtz Prasad Jayaweera Paul Johannesson Petia Wohed Modelling Institutional, Communicative and Physical Domains in Agent Oriented Information Systems. 189-205 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3030&spage=189 2003 conf/aois/2003 AOIS db/conf/aois/aois2003.html#BergholtzJJW03