@inproceedings{SIGIR-1985-SaltonV,
	author        = "Gerard Salton and Ellen M. Voorhees",
	booktitle     = "{Proceedings of the Eighth annual international ACM SIGIR conference on Research and development in information retrieval}",
	doi           = "10.1145/253495.253510",
	isbn          = "0-89791-159-8",
	pages         = "54--69",
	publisher     = "{ACM}",
	title         = "{Automatic Assignment of Soft Boolean Operators}",
	year          = 1985,
}