1. 1) M. Fleishmann, P. J. Hendra and A. J. McQuillan: Chem. Phys. Lett., 26, 163 (1974).
2. 2) R. J. Anderson and J. C. Hamilton: Proc. 9th Intern. Conf. Raman Spectrosc., p. 239, The Chem. Soc. Jpn., Tokyo (1974).
3. 3) A. Campion, Proc. 9th Intern. Conf. Raman Spectrosc., p. 550
4. P. Campion, V. M. Mullins and J. K. Brown: J de Phys., C-10, 341(1983).
5. 5) T. Ohtsuka, J. Guo and N. Sato: J. Electrochem. Soc., to be published.