Masayuki Yoshino Katsuyuki Okeya Camille Vuillaume Montgomery Multiplication with Twice the Bit-Length of Multipliers. 203-210 2008 91-A IEICE Transactions 1 http://dx.doi.org/10.1093/ietfec/e91-a.1.203 db/journals/ieicet/ieicet91a.html#YoshinoOV08