@inproceedings{KR-1992-Hanschke,
	author        = "Philipp Hanschke",
	booktitle     = "{Proceedings of the Third International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-262-3",
	pages         = "318--329",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Specifying Role Interaction in Concept Languages}",
	year          = 1992,
}