@inproceedings{PODS-2011-ShengT11b,
	author        = "Cheng Sheng and Yufei Tao",
	booktitle     = "{Proceedings of the 30th Symposium on Principles of Database Systems}",
	doi           = "10.1145/1989284.1989297",
	isbn          = "978-1-4503-0660-7",
	pages         = "129--139",
	publisher     = "{ACM}",
	title         = "{New results on two-dimensional orthogonal range aggregation in external memory}",
	year          = 2011,
}