@inproceedings{PODS-2000-AngiulliBIP,
	author        = "Fabrizio Angiulli and Rachel Ben-Eliyahu-Zohary and Giovambattista Ianni and Luigi Palopoli",
	booktitle     = "{Proceedings of the 19th Symposium on Principles of Database Systems}",
	doi           = "10.1145/335168.335227",
	isbn          = "1-58113-214-X",
	pages         = "237--244",
	publisher     = "{ACM}",
	title         = "{Computational Properties of Metaquerying Problems}",
	year          = 2000,
}