@inproceedings{publication-2817,
	author={Karras, Panagiotis and Mamoulis, Nikos},
	booktitle={Proc.  of the 23rd IEEE Intl Conf. on Data Engineering (ICDE)},
	pages={436-445},
	publisher={IEEE Computer Society},
	title={The Haar+ Tree: a Refined Synopsis Data Structure},
	year=2007,
}