@inproceedings{UML-1999-Henderson-SellersAF,
	author        = "Brian Henderson-Sellers and Colin Atkinson and Donald Firesmith",
	booktitle     = "{Proceedings of the Second International Conference on the Unified Modeling Language: Beyond the Standard}",
	editor        = "Robert B. France and Bernhard Rumpe",
	pages         = "49--66",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A UML Variant: OML}",
	volume        = 1723,
	year          = 1999,
}