\input zb-basic \input zb-ioport \iteman{io-port 70427178} \itemau{Roli, Fabio} \itemti{Semi-supervised multiple classifier systems: background and research directions} \itemso{Multiple Classifier Systems, 1-11 (2005).} \itemcc{} \itemut{} \itemli{doi:10.1007/11494683\_1} \end