@inproceedings{CIKM-2006-TaoZ,
	author        = "Tao Tao and ChengXiang Zhai",
	booktitle     = "{Proceedings of the 15th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1183614.1183732",
	isbn          = "1-59593-433-2",
	pages         = "790--791",
	publisher     = "{ACM}",
	title         = "{Best-k queries on database systems}",
	year          = 2006,
}