@inproceedings{HT-2002-ShipmanMMHA,
	author        = "Frank M. Shipman III and J. Michael Moore and Preetam Maloor and Hao-wei Hsieh and Raghu Akkapeddi",
	booktitle     = "{Proceedings of the 13th Conference on Hypertext and Hypermedia}",
	doi           = "10.1145/513338.513350",
	isbn          = "1-58113-477-0",
	pages         = "25--34",
	publisher     = "{ACM}",
	title         = "{Semantics happen: knowledge building in spatial hypertext}",
	year          = 2002,
}