1. ?Canning Handbook of Electroplating?, E. and F. N. Son, London, 22nd Edition, (1978).
2. ?Modern Electroplating?, (edited by F. A. Lowenheim), Chapman and Hall, London (1974).
3. J. K. Dennis and T. E. Such, ?Nickel and Chromium Plating?, Newnes-Butterworths, London, (1972).
4. G. Dubpernell, ?The Electrodeposition of Chromium from Chromic Acid Solutions?, Pergamon Press, Oxford, (1977).
5. H. Gerischer and M. K�ppel,Z. Elektrochem. 61 (1957) 463.