Shengli Sheng Sylvia L. Osborn A Classifier-Based Approach to User-Role Assignment for Web Applications. 163-171 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3178&spage=163 2004 conf/sdmw/2004 Secure Data Management db/conf/sdmw/sdmw2004.html#ShengO04