1. E. Lopez-Menchero, L. Gehem, H. Eschrich, P. Hansen, J. Centeno and R. Aerts, ETR-180 (1966) EUROCHEMIC Mol (Belgium).
2. See, for instance: ?Denki Kagaku Binran? (4th edition), The Electrochemical Society of Japan (ed.), Maruzen, Tokyo (1985) p. 299.
3. C. Robert (ed.) ?CRC Handbook of Chemistry and Physics?, 68th ed., CRC Press, Boca Raton (1987) p. D-154.
4. S. Motoo, M. Watanabe and N. Furuya,J. Electroanal. Chem. 160 (1984) 351.
5. S. Motoo, R. Hirasawa, K. Ota and N. Furuya, Research Projects in Review 1987, Nissan Science Foundation, Tokyo10 (1987) 191.