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GIS
1992
ACM
13 years 11 months ago
A Conceptual Model of Wayfinding Using Multiple Levels of Abstraction
Sabine Timpf, Gary S. Volta, David W. Pollock, Max...
GIS
1998
ACM
13 years 11 months ago
Abstract and Discrete Modeling of Spatio-Temporal Data Types
Martin Erwig, Ralf Hartmut Güting, Markus Sch...