Abdelmounaam Rezgui Athman Bouguettaya Zaki Malik A Reputation-Based Approach to Preserving Privacy in Web Services. 91-103 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2819&spage=91 2003 conf/tes/2003 TES db/conf/tes/tes2003.html#RezguiBM03