@inproceedings{SIGMOD-2011-BergamaschiDGLV,
	author        = "Sonia Bergamaschi and Elton Domnori and Francesco Guerra and Raquel Trillo Lado and Yannis Velegrakis",
	booktitle     = "{Proceedings of the 29th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1989323.1989383",
	isbn          = "978-1-4503-0661-4",
	pages         = "565--576",
	publisher     = "{ACM}",
	title         = "{Keyword search over relational databases: a metadata approach}",
	year          = 2011,
}