1. 1) C.L. Mantell: Electrochemical Engineering, (McGraw-Hill Book Company, Inc., New York, NY, U.S.A., 1960) pp.142–167, 185–192, 210–224.
2. 2) Hitetsu Kinzoku Seiren, (Nippon Kinzoku Gakkai, Sendai, 1980) p.228, 241.
3. 3) Denki Kagaku Binran, (Denki Kagaku Kyokai, Maruzen, Tokyo,1985) pp.308–327.
4. 4) B. Veilleux, A.M. Lafront and E. Ghali: Can. Metall. Q. 41 (2002) 47–62. 10.1179/cmq.2002.41.1.47
5. 5) K. Shimokawa: Thesis for doctoral degree, (Kyoto University, 2013) pp.19–22.