@article{VLDB-2012-ShengZTJ,
	author        = "Cheng Sheng and Nan Zhang and Yufei Tao and Xin Jin",
	ee            = "http://vldb.org/pvldb/vol5/p1112_chengsheng_vldb2012.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 11,
	pages         = "1112--1123",
	title         = "{Optimal Algorithms for Crawling a Hidden Database in the Web}",
	volume        = 5,
	year          = 2012,
}