@inproceedings{SIGIR-2013-GaoYSL,
	author        = "Bin Gao and Jun Yan and Dou Shen and Tie-Yan Liu",
	booktitle     = "{Proceedings of the 36th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2484028.2484221",
	isbn          = "978-1-4503-2034-4",
	pages         = "1135",
	publisher     = "{ACM}",
	title         = "{Internet advertising: theory and practice}",
	year          = 2013,
}