Andrea Clematis Daniele D'Agostino Alfonso Quarati Angelo Corana Vittoria Gianuzzi Alessio Merlo A Distributed Approach for Structured Resource Discovery on Grid. 117-125 2008 CISIS http://dx.doi.org/10.1109/CISIS.2008.112 db/conf/cisis/cisis2008.html#ClematisDQCGM08