@article{VLDB-2009-LiSD,
	author        = "Jian Li and Barna Saha and Amol Deshpande",
	ee            = "http://www.vldb.org/pvldb/2/vldb09-769.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 1,
	pages         = "502--513",
	title         = "{A Unified Approach to Ranking in Probabilistic Databases}",
	volume        = 2,
	year          = 2009,
}