@inproceedings{VLDB-1984-EhrichLG,
	author        = "Hans-Dieter Ehrich and Udo W. Lipeck and Martin Gogolla",
	booktitle     = "{Proceedings of the 10th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1984/P301.PDF",
	isbn          = "0-934613-16-8",
	pages         = "301--308",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Specification, Semantics, and Enforcement of Dynamic Database Constraints}",
	year          = 1984,
}