Thomas Lukasiewicz Azzurra Ragone Combining Boolean Games with the Power of Ontologies for Automated Multi-Attribute Negotiation in the Semantic Web. 2008 SMRR http://ceur-ws.org/Vol-416/paper5.pdf conf/semweb/2008smrr db/conf/semweb/smrr2008.html#LukasiewiczR08