1. Jones, C.B., Purves, R.S., Clough, P.D., Joho, H.: Modelling vague places with knowledge from the web. International Journal of Geographical Information Science 22(10), 1045–1065 (2008)
2. Larson, R.R.: Geographic information retrieval and spatial browsing. GIS and Libraries: Patrons, Maps and Spatial Information, 81–124 (April 1996)
3. Goodchild, M.F.: Citizens as voluntary sensors: Spatial data infrastructure in the world of web 2.0. International Journal of Spatial Data Infrastructures Research 2, 24–32 (2007)
4. Bennett, B., Mallenby, D., Third, A.: An ontology for grounding vague geographic terms. In: Eschenbach, C., Gruninger, M. (eds.) Proceedings of the 5th International Conference on Formal Ontology in Information Systems (FOIS 2008). IOS Press, Amsterdam (2008)
5. Henrich, A., Lüdecke, V.: Determining geographic representations for arbitrary concepts at query time. In: LOCWEB 2008: Proceedings of the first international workshop on Location and the web, pp. 17–24. ACM, New York (2008)