Ioannis Kouretas Charalambos Basetas Vassilis Paliouras Low-power logarithmic number system addition/subtraction and their impact on digital filters. 692-695 2008 ISCAS http://dx.doi.org/10.1109/ISCAS.2008.4541512 conf/iscas/2008 db/conf/iscas/iscas2008.html#KouretasBP08