J. Nathan Matias, David P. Williams. Comparing spatial hypertext collections. In Ciro Cattuto, Giancarlo Ruffo, Filippo Menczer, editors, HYPERTEXT 2009, Proceedings of the 20th ACM Conference on Hypertext and Hypermedia, Torino, Italy, June 29 - July 1, 2009. pages 45-50, ACM, 2009. [doi]
Abstract is missing.