1. 2) M. Nagumo, in series of Zairyo-to-Kankyo, 53, 548 (2004), 54, 251, 306 (2005), 55, 42, 92, 380, 430 (2006) and 56, 132, 343, 382 (2007). For hydrogen entry from aqueous solution, M. Nagumo, Zairyo-to-Kankyo, 55, 380, 430 (2006).
2. 4) E. Protopopoff and F. Marcus, “Corrosion Mechanisms in Theory and Practice, Chap. 3”, 2nd Ed, Ed by F. Marcus, p.53, Marcel Dekker (2002).
3. 5) B. Pound, “Corrosion and Oxide Films, Chap.2.2”, Encyclopedia of Electrochemistry, Vol.4, Eds by M. Stratmann & G. S. Frankel, p.108, Wiley-VCH (2003).