@inproceedings{SIGMOD-2000-AcharyaGP,
	author        = "Swarup Acharya and Phillip B. Gibbons and Viswanath Poosala",
	booktitle     = "{Proceedings of the 30th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/342009.335450",
	isbn          = "1-58113-217-4",
	pages         = "487--498",
	publisher     = "{ACM}",
	title         = "{Congressional Samples for Approximate Answering of Group-By Queries}",
	year          = 2000,
}