Agent UML
Links
Representing Social Structures in UML - Parunak H. V. D., and Odell J.
http://www.erim.org/~vparunak/AOSE2001.pdf
Paper describing how to capture sociological constructions in an Agent-extended UML (2001, PDF)
http://www.erim.org/~vparunak/AOSE2001.pdf