Fernando Bação Victor Sousa Lobo Marco Painho Geo-Self-OrganizingMap (Geo-SOM) for Building and Exploring Homogeneous Regions. 22-37 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3234&spage=22 2004 conf/giscience/2004 GIScience db/conf/giscience/giscience2004.html#BacaoLP04