Yuh-Rong Leu Chun-Lai Cheng 478-481 1997 conf/compsac/1997 COMPSAC https://doi.org/10.1109/CMPSAC.1997.625053 https://doi.ieeecomputersociety.org/10.1109/CMPSAC.1997.625053 db/conf/compsac/compsac1997.html#LeuC97