@inproceedings{MODELS-2009-CengarleGR,
	author        = "María Victoria Cengarle and Hans Grönniger and Bernhard Rumpe",
	booktitle     = "{Proceedings of the 12th International Conference on Model Driven Engineering Languages and Systems}",
	doi           = "10.1007/978-3-642-04425-0_54",
	editor        = "Andy Schürr and Bran Selic",
	isbn          = "978-3-642-04424-3",
	pages         = "670--684",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Variability within Modeling Language Definitions}",
	volume        = 5795,
	year          = 2009,
}