Isabel F. Cruz William Sunna Anjli Chaudhry Semi-automatic Ontology Alignment for Geospatial Data Integration. 51-66 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3234&spage=51 2004 conf/giscience/2004 GIScience db/conf/giscience/giscience2004.html#CruzSC04