@inproceedings{CHI-1994-FurnasZ94a,
	author        = "George W. Furnas and Jeff Zacks",
	booktitle     = "{Proceedings of the 12th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/191666.191778",
	isbn          = "0-89791-650-6",
	pages         = "330--336",
	publisher     = "{ACM}",
	title         = "{Multitrees: enriching and reusing hierarchical structure}",
	year          = 1994,
}