Olga Caprotti James H. Davenport Mike Dewar Julian A. Padget Mathematics on the (Semantic) NET. 213-224 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3053&spage=213 2004 conf/esws/2004 ESWS db/conf/esws/esws2004.html#CaprottiDDP04