@inproceedings{VLDB-1982-BjornerL,
	author        = "Dines Bjørner and Hans Henrik Løvengreen",
	booktitle     = "{Proceedings of the Eighth International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1982/P334.PDF",
	isbn          = "0-934613-14-1",
	pages         = "334--347",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Formalization of Database Systems — and a Formal Definition of IMS}",
	year          = 1982,
}