1. M. Fleischmann, F. Goodridge and J.R. Backhurst, British Patent 1194181 (1970).
2. F. Coeuret, P. le Goff and F. Vergnes, French Patent 1500269 (1967).
3. C. M. S. Raats, H. F. Boon and G. Van Der Heiden,Int. Symp. Chloride Hydrometallurgy, Brussels, 26?28 September (1977).
4. J. R. Backhurst, J. M. Coulson, F. Goodridge and R. E. Plimley,J. Electrochem. Soc. 116 (1969) 1600.
5. M. Fleischmann, J. W. Oldfield and D. F. Porter,J. Electroanal. Chem. 29 (1971) 241.