Stefano Berretti Alberto Del Bimbo Pietro Pala Collection Fusion for Distributed Image Retrieval. 70-83 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2924&spage=70 2003 conf/sigir/2003dmir Distributed Multimedia Information Retrieval db/conf/sigir/sigir2003dmir.html#BerrettiBP03