Daisuke Adachi Tomio Hirata Refined Computations for Points of the Form 2<sup><i>k</i></sup><i>P</i> Based on Montgomery Trick. 334-339 2006 89-A IEICE Transactions 1 http://dx.doi.org/10.1093/ietfec/e89-a.1.334 db/journals/ieicet/ieicet89a.html#AdachiH06