@inproceedings{SIGIR-2004-WenLM,
	author        = "Ji-Rong Wen and Ni Lao and Wei-Ying Ma",
	booktitle     = "{Proceedings of the 27th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1008992.1009005",
	isbn          = "1-58113-881-4",
	pages         = "57--63",
	publisher     = "{ACM}",
	title         = "{Probabilistic model for contextual retrieval}",
	year          = 2004,
}