@inproceedings{SIGIR-1981-YuL,
	author        = "Clement T. Yu and K. Lam",
	booktitle     = "{Proceedings of the Fourth International Conference on Information Storage and Retrieval}",
	cdrom         = "SIGIR1981/P046.pdf",
	doi           = "10.1145/511754.511761",
	isbn          = "0-89791-052-4",
	pages         = "46--55",
	publisher     = "{ACM}",
	title         = "{An Approach to Probabilistic Retrieval}",
	year          = 1981,
}