@inproceedings{VLDB-1983-GolshaniMS,
	author        = "Forouzan Golshani and Thomas Stephen Edward Maibaum and M. R. Sadler",
	booktitle     = "{Proceedings of the Ninth International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1983/P331.PDF",
	isbn          = "0-934613-15-X",
	pages         = "331--339",
	publisher     = "{Morgan Kaufmann}",
	title         = "{A Modal System of Algebras for Database Specification and Query/Update Language Support}",
	year          = 1983,
}