@inproceedings{ECIR-2007-XuCLCH,
	author        = "Jun Xu and Yunbo Cao and Hang Li and Nick Craswell and Yalou Huang",
	booktitle     = "{Proceedings of the 29th European Conference on Information Retrieval Research: Advances in Information Retrieval}",
	doi           = "10.1007/978-3-540-71496-5_60",
	isbn          = "978-3-540-71494-1",
	pages         = "629--636",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Searching Documents Based on Relevance and Type}",
	volume        = 4425,
	year          = 2007,
}