Stanley R. M. Oliveira Osmar R. Zaïane Yücel Saygin Secure Association Rule Sharing. 74-85 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3056&spage=74 2004 conf/pakdd/2004 PAKDD db/conf/pakdd/pakdd2004.html#OliveiraZS04