@inproceedings{SIGIR-1986-WongZ,
	author        = "S. K. Michael Wong and Wojciech Ziarko",
	booktitle     = "{Proceedings of the Ninth International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	cdrom         = "SIGIR1986/P228.pdf",
	doi           = "10.1145/253168.253217",
	isbn          = "0-89791-187-3",
	pages         = "228--233",
	publisher     = "{ACM}",
	title         = "{A Machine Learning Approach to Information Retrieval}",
	year          = 1986,
}