@inproceedings{HT-1993-MarshallS,
	author        = "Catherine C. Marshall and Frank M. Shipman III",
	booktitle     = "{Proceedings of the Fifth Conference on Hypertext}",
	cdrom         = "HT1993/P217.pdf",
	doi           = "10.1145/168750.168826",
	isbn          = "0-89791-624-7",
	pages         = "217--230",
	publisher     = "{ACM}",
	title         = "{Searching for the Missing Link: Discovering Implicit Structure in Spatial Hypertext}",
	year          = 1993,
}