@inproceedings{PODS-2004-CalvaneseGLR,
	author        = "Diego Calvanese and Giuseppe De Giacomo and Maurizio Lenzerini and Riccardo Rosati",
	booktitle     = "{Proceedings of the 23rd Symposium on Principles of Database Systems}",
	doi           = "10.1145/1055558.1055593",
	ee            = "http://www.acm.org/sigmod/pods/proc04/pdf/P-25.pdf",
	isbn          = "1-58113-858-X",
	pages         = "241--251",
	publisher     = "{ACM}",
	title         = "{Logical Foundations of Peer-To-Peer Data Integration}",
	year          = 2004,
}