Chung Keung Poon Matthew Chang An Email Classifier Based on Resemblance. 344-348 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2871&spage=344 2003 conf/ismis/2003 ISMIS db/conf/ismis/ismis2003.html#PoonC03