Miriam Baglioni Maria V. Masserotti Chiara Renso Laura Spinsanti Building Geospatial Ontologies from Geographical Databases. 195-209 2007 conf/geos/2007 GeoS http://dx.doi.org/10.1007/978-3-540-76876-0_13 db/conf/geos/geos2007.html#BaglioniMRS07