@article{CormodeTirthapuraXu09b,
	author={Graham Cormode and Srikanta Tirthapura and Bojian Xu},
	journal={{SIAM} Journal on Computing ({SICOMP})},
	number=4,
	pages={1309-1339},
	title={Time-decaying Sketches for Robust Aggregation of Sensor Data},
	volume=39,
	year=2009,
}