Gerardo Canfora Anna Rita Fasolino Gianni Frattolillo Porfirio Tramontana 24-36 2006 conf/csmr/2006 CSMR http://doi.ieeecomputersociety.org/10.1109/CSMR.2006.34 db/conf/csmr/csmr2006.html#CanforaFFT06