Roy A. Ruddle. Navigating Overlapping Virtual Worlds: Arriving in One Place and Finding that You re Somewhere Else. In Christian Freksa, Wilfried Brauer, Christopher Habel, Karl Friedrich Wender, editors, Spatial Cognition II, Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications. Volume 1849 of Lecture Notes in Computer Science, pages 333-347, Springer, 2000. [doi]
Abstract is missing.