@inproceedings{PODS-2003-CalvaneseGLV,
	author        = "Diego Calvanese and Giuseppe De Giacomo and Maurizio Lenzerini and Moshe Y. Vardi",
	booktitle     = "{Proceedings of the 22nd Symposium on Principles of Database Systems}",
	doi           = "10.1145/773153.773160",
	isbn          = "1-58113-670-6",
	pages         = "56--67",
	publisher     = "{ACM}",
	title         = "{View-based query containment}",
	year          = 2003,
}