Yijun Liu Zhenkun Li Pinghua Chen Guangcong Liu 451-458 2007 conf/vlsid/2007 VLSI Design https://doi.org/10.1109/VLSID.2007.128 https://doi.ieeecomputersociety.org/10.1109/VLSID.2007.128 db/conf/vlsid/vlsid2007.html#LiuLCL07