@inproceedings{ML-1991-CrawfordFAT,
	author        = "Stuart L. Crawford and Robert M. Fung and Lee A. Appelbaum and Richard M. Tong",
	booktitle     = "{Proceedings of the Eighth International Workshop on Machine Learning}",
	isbn          = "1-55860-200-3",
	pages         = "245--249",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Classification Trees for Information Retrieval}",
	year          = 1991,
}