@inproceedings{SIGIR-2007-YeungCB,
	author        = "Peter C. K. Yeung and Charles L. A. Clarke and Stefan Büttcher",
	booktitle     = "{Proceedings of the 30th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1277741.1277895",
	isbn          = "978-1-59593-597-7",
	pages         = "759--760",
	publisher     = "{ACM}",
	title         = "{Improving retrieval accuracy by weighting document types with clickthrough data}",
	year          = 2007,
}