Agustina Buccella Domenico Gendarmi Filippo Lanubile Alejandra Cechich Attilio Colagrossi Ontology-Driven Generation of a FederatedSchema for GIS. 2007 SWAP http://ceur-ws.org/Vol-314/27.pdf conf/swap/2007 db/conf/swap/swap2007.html#BuccellaGLCC07