1) T. Mizuno and M. Enyo ; Sorption of Hydrogen on and in Hydrogen-Absorbing Metals in Electrochemical Environments, in : R. E. White, B. E. Conwey, J. O’M Bockris (Eds.) Modern Aspects of Electrochemistry No. 30, Plenum Press, N. Y., 1996, pp. 415-503