@inproceedings{CIKM-2005-AfratiLL,
	author        = "Foto N. Afrati and Paraskevas V. Lekeas and Chen Li",
	booktitle     = "{Proceedings of the 14th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1099554.1099605",
	isbn          = "1-59593-140-6",
	pages         = "237--238",
	publisher     = "{ACM}",
	title         = "{Answering aggregation queries on hierarchical web sites using adaptive sampling}",
	year          = 2005,
}