@inproceedings{SIGIR-2009-XuJW,
	author        = "Yang Xu and Gareth J. F. Jones and Bin Wang",
	booktitle     = "{Proceedings of the 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1571941.1571954",
	isbn          = "978-1-60558-483-6",
	pages         = "59--66",
	publisher     = "{ACM}",
	title         = "{Query dependent pseudo-relevance feedback based on wikipedia}",
	year          = 2009,
}