1. Hickling and Salt, Trans. Faraday Soc., 38, 474 (1942).
2. Lewina and Silberfarb, Acta Physiochim. U.R.S.S., 4, 275 (1936). Novoselski, J. Phys. Chim. (Russ.), 11, 369 (1938). Hickling and Salt, Trans. Faraday Soc., 37, 224 (1941).
3. Bowden and Agar, Annual Reports of the Chemical Society, 90 (1938). Wirtz, Z. Elektrochem., 44, 303 (1938).
4. Gurney, Proc Roy. Soc., A, 134, 137 (1931).
5. Eyring, Glasstone and Laidler, J. Chem. Phys., 7, 1053 (1939).