Javier Lacasta Javier Nogueras-Iso Rubén Béjar Pedro R. Muro-Medrano F. Javier Zarazaga-Soria A Web Ontology Service to facilitate interoperability within a Spatial Data Infrastructure: Applicability to discovery. 947-971 2007 63 Data Knowl. Eng. 3 http://dx.doi.org/10.1016/j.datak.2007.06.002 db/journals/dke/dke63.html#LacastaNBMZ07