@inproceedings{UML-2000-DammHTT,
	author        = "Christian Heide Damm and Klaus Marius Hansen and Michael Thomsen and Michael Tyrsted",
	booktitle     = "{Proceedings of the Third International Conference on the Unified Modeling Language: Advancing the Standard}",
	doi           = "10.1007/3-540-40011-7_29",
	editor        = "Andy Evans and Stuart Kent and Bran Selic",
	pages         = "396--409",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Supporting Several Levels of Restriction in the UML}",
	volume        = 1939,
	year          = 2000,
}