@inproceedings{SIGIR-2007-Lee,
	author        = "Lillian Lee",
	booktitle     = "{Proceedings of the 30th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1277741.1277891",
	isbn          = "978-1-59593-597-7",
	pages         = "751--752",
	publisher     = "{ACM}",
	title         = "{IDF revisited: a simple new derivation within the Robertson-Spärck Jones probabilistic model}",
	year          = 2007,
}