@conference {33,
	title = {Importance and Properties of Roles in MAS Organization: A review of methodologies and systems},
	booktitle = {in Proc. of the workshop on MAS Problem Spaces and Their Implications to Achieving Globally Coherent Behavior (AAMAS 02)},
	year = {2002},
	month = {00/2002},
	address = {Bologna, Italy},
	author = {I. Partsakoulakis and G. Vouros}
}
