Yuchun Ma Xiang Qiu Xiangqing He Xianlong Hong Incremental power optimization for multiple supply voltage design. 280-286 2009 ISQED http://dx.doi.org/10.1109/ISQED.2009.4810308 conf/isqed/2009 db/conf/isqed/isqed2009.html#MaQHH09