1. H. Göhr and E. Lange, Z. Elektrochem. 63, 673 (1959).
2. E. S. Snavely and N. Hackerman, Can. J. Chem 37, 268 (1959).
3. K. J. Vetter, Z. Elektrochem. 62, 674 (1958).
4. M. Cohen, Can. J. Chem. 37, 286 (1959).
5. W. H. Wade and N. Hackerman, Trans. Faraday Soc. 53 (420), Part 12 (1951).