@inproceedings{CAiSE-1994-Odberg,
	author        = "Erik Odberg",
	booktitle     = "{Proceedings of the Sixth Conference on Advanced Information Systems Engineering}",
	doi           = "10.1007/3-540-58113-8_186",
	isbn          = "3-540-58113-8",
	pages         = "406--420",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Category Classes: Flexible Classification and Evolution in Object-Oriented Databases}",
	volume        = 811,
	year          = 1994,
}