1. Bloom, P., Peterson, M.A., Nadel, L., Garrett, M.F. (eds.): Language and Space. Language, Speech and Communication. MIT Press, Cambridge (1994)
2. Burrough, P., Couclelis, H.: Practical Consequences of Distinguishing Crisp Geographic Objects. In: Masser, I., Salgé, F. (eds.) Geographic Objects with Indeterminate Boundaries, pp. 333–335. Taylor & Francis, London (1996a)
3. Burrough, P.A., Frank, A.U.: Concepts and Paradigms in Spatial Information: Are Current Geographic Information Systems Truly Generic? International Journal of Geographical Information Systems 9(2), 101–116 (1995)
4. GISDATA Series,1996
5. Campari, I.: GIS Commands as Small Scale Space Terms: Cross-Cultural Conflicts of Their Spatial Content. In: SDH 1994, Sixth International Symposium on Spatial Data Handling, Association for Geographic Information, Edinburgh, Scotland (1994)