1. Yoshimi Masuda and Hideyuki Kashiwabara, Closed System Hg process chlor-alkali electrolysis,Kagaku Sochi (Chemical Equipment) 5 (1978) 25.
2. Masaharu Onda,Soda to Enso (Soda and Chlorine) 6 (1984) 27.
3. Tadashi Yawataya, A Guide to Ion Exchange Membranes for Engineers, Kyoritu Publishing Co (1982) p. 33.
4. Akira Yomiyama, Shinsaku Ogawa and Koji Miyauch, Summary of No. 5 Soda Ind. Tech. Discussion, 1 Japan Soda Association, Tokyo (1981).
5. Hiroshi Ukihashi, Yoshio Oda, Tatsuro Asawa and Kimihiko Sato, Summary of No. 6 Soda Ind. Tech. Discussion, 1 Japan Soda Association, Tokyo (1982).