Stefano Berretti Alberto Del Bimbo Pietro Pala Merging Results for Distributed Content Based Image Retrieval. 215-232 2004 24 Multimedia Tools Appl. 3 http://springerlink.metapress.com/index/10.1023/B:MTAP.0000039388.63801.67 db/journals/mta/mta24.html#BerrettiBP04