Yasushi Yuminaka Yoshisat Sasaki Takafumi Aoki Tatsuo Higuchi Wave-Parallel Computing Systems using Multiple-Valued Pseudo-Orthogonal Sequences. 148- 1998 ISMVL http://csdl.computer.org/dl/proceedings/ismvl/1998/8371/00/83710148.pdf db/conf/ismvl/ismvl1998.html#YuminakaSAH98