Yi Zhu Jianhua Liu Haikun Zhu Chung-Kuan Cheng Timing-power optimization for mixed-radix Ling adders by integer linear programming. 131-137 2008 ASP-DAC http://dx.doi.org/10.1109/ASPDAC.2008.4483926 conf/aspdac/2008 db/conf/aspdac/aspdac2008.html#ZhuLZC08