@inproceedings{HT-1989-CrouchCA,
	author        = "Donald B. Crouch and Carolyn J. Crouch and Glenn Andreas",
	booktitle     = "{Proceedings of the Second Conference on Hypertext}",
	cdrom         = "HT1989/P225.pdf",
	doi           = "10.1145/74224.74243",
	isbn          = "0-89791-339-6",
	pages         = "225--237",
	publisher     = "{ACM}",
	title         = "{The Use of Cluster Hierarchies in Hypertext Information Retrieval}",
	year          = 1989,
}