@inproceedings{SIGIR-2008-GuoXLC,
	author        = "Jiafeng Guo and Gu Xu and Hang Li and Xueqi Cheng",
	booktitle     = "{Proceedings of the 31st International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1390334.1390400",
	isbn          = "978-1-60558-164-4",
	pages         = "379--386",
	publisher     = "{ACM}",
	title         = "{A unified and discriminative model for query refinement}",
	year          = 2008,
}