@inproceedings{SIGIR-2000-Ogawa,
	author        = "Yasushi Ogawa",
	booktitle     = "{Proceedings of the 23rd International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/345508.345622",
	isbn          = "1-58113-226-3",
	pages         = "321--323",
	publisher     = "{ACM}",
	title         = "{Pseudo-frequency method: an efficient document ranking retrieval method for n-gram indexing}",
	year          = 2000,
}