@inproceedings{CIKM-2011-VirgilioOTT,
	author        = "Roberto De Virgilio and Giorgio Orsi and Letizia Tanca and Riccardo Torlone",
	booktitle     = "{Proceedings of the 20th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2063576.2063800",
	isbn          = "978-1-4503-0717-8",
	pages         = "1559--1564",
	publisher     = "{ACM}",
	title         = "{Semantic data markets: a flexible environment for knowledge management}",
	year          = 2011,
}