@inproceedings{VLDB-1981-Date,
	author        = "C. J. Date",
	booktitle     = "{Proceedings of the Seventh International Conference on Very Large Data Bases}",
	cdrom         = "VLDB81/P002.PDF",
	pages         = "2--12",
	publisher     = "{IEEE Computer Society}",
	title         = "{Referential Integrity}",
	year          = 1981,
}