@inproceedings{PODS-2005-Dobra,
	author        = "Alin Dobra",
	booktitle     = "{Proceedings of the 24th Symposium on Principles of Database Systems}",
	doi           = "10.1145/1065167.1065196",
	isbn          = "1-59593-062-0",
	pages         = "228--237",
	publisher     = "{ACM}",
	title         = "{Histograms revisited: when are histograms the best approximation method for aggregates over joins?}",
	year          = 2005,
}