1. J. Burbank, A. C. Simon and E. Willihnganz,Adv. Electrochem and Electrochem. Eng. 8 (Ed. P. Delahay and C. W. Tobias) Interscience, New York (1971) p. 157.
2. T. F. Sharpe, ?Encyclopaedia of the Electrochemistry of The Elements? (Ed. A. J. Bard)1 Dekker, New York (1973) Chap. 5.
3. J. P. Carr, N. A. Hampson and R. Taylor,J. Electroanal. Chem. 33 (1971) 109.
4. G. Archdale and J. A. Harrison,ibid 34 (1972) 21.
5. Idem, ibid 39 (1972) 357.