Kenji Funaoka Akira Takeda Shinpei Kato Nobuyuki Yamasaki Dynamic voltage and frequency scaling for optimal real-time scheduling on multiprocessors. 27-33 2008 SIES http://dx.doi.org/10.1109/SIES.2008.4577677 conf/sies/2008 db/conf/sies/sies2008.html#FunaokaTKY08