\input zb-basic \input zb-ioport \iteman{io-port 70550686} \itemau{Palma, Gianpaolo; Corsini, Massimiliano; Dellepiane, Matteo; Scopigno, Roberto} \itemti{Improving 2D-3D registration by mutual information using gradient maps} \itemso{Eurographics Italian Chapter Conference, 89-94 (2010).} \itemcc{} \itemut{} \itemli{doi:10.2312/LocalChapterEvents/ItalChap/ItalianChapConf2010/089-094} \end