Agustina Buccella Domenico Gendarmi Filippo Lanubile Giovanni Semeraro Alejandra Cechich Attilio Colagrossi A Layered Ontology-Based Architecture for Integrating Geographic Information. 135-144 2008 New Challenges in Applied Intelligence Technologies http://dx.doi.org/10.1007/978-3-540-79355-7_13 series/sci/2008-134 db/series/sci/sci134.html#BuccellaGLSCC08