A hardware algorithm for computing sine and cosine using redundant binary representation. - Naofumi Takagi; Tohru Asada; Shuzo Yajima (Syst. Comput. Jpn., 1987)

Redundant CORDIC Methods with a Constant Scale Factor for Sine and Cosine Computation. - Naofumi Takagi; Tohru Asada; Shuzo Yajima (IEEE Trans. Computers, 1991)