@inproceedings{VLDB-2006-CaliK,
	acmid         = "1164208",
	author        = "Andrea Calì and Michael Kifer",
	booktitle     = "{Proceedings of the 32nd International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/2006/p942-cali.pdf",
	isbn          = "1-59593-385-9",
	pages         = "942--952",
	publisher     = "{ACM}",
	title         = "{Containment of Conjunctive Object Meta-Queries}",
	year          = 2006,
}