M. C. Mekhallalati M. K. Ibrahim New high radix maximally-redundant signed digit adder. 459-462 1999 conf/iscas/1999 ISCAS (1) http://doi.ieeecomputersociety.org/10.1109/ISCAS.1999.777914 db/conf/iscas/iscas1999-1.html#MekhallalatiI99