1. Shift Register Sequences, San Francisco, Holden-Day (1967).
2. M-sequence, Science Publ. Co. 208, pp. 37–43 (Oct. 1980).
3. and . Theory of Information and Code, Iwanami Publ. Co. (1982).
4. and . Coding plate for remote control, Pat. 31-8188 (1956).
5. and . Chain code encoder, 61-502512 (1986).