@inproceedings{SIGIR-2012-LiuSCNW,
	author        = "Yang Liu and Ruihua Song and Yu Chen and Jian-Yun Nie and Ji-Rong Wen",
	booktitle     = "{Proceedings of the 35th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2348283.2348289",
	isbn          = "978-1-4503-1472-5",
	pages         = "15--24",
	publisher     = "{ACM}",
	title         = "{Adaptive query suggestion for difficult queries}",
	year          = 2012,
}