Wolfgang Nejdl Daniel Olmedilla Marianne Winslett PeerTrust: Automated Trust Negotiation for Peers on the Semantic Web. 118-132 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3178&spage=118 2004 conf/sdmw/2004 Secure Data Management db/conf/sdmw/sdmw2004.html#NejdlOW04