@inproceedings{SIGMOD-2011-YangWCK,
	author        = "Mohan Yang and Haixun Wang and Haiquan Chen and Wei-Shinn Ku",
	booktitle     = "{Proceedings of the 29th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1989323.1989409",
	isbn          = "978-1-4503-0661-4",
	pages         = "817--828",
	publisher     = "{ACM}",
	title         = "{Querying uncertain data with aggregate constraints}",
	year          = 2011,
}