1. C. A. Snavely,Trans. Electrochem. Soc. 92 (1947) 537.
2. G. Dubpernell, ?Modern electroplating?, 2nd Edn (Wiley, New York, 1963) p. 87.
3. R. M. Burns andW. W. Bradley, ?Protective coating for metals?, 3rd Edn (Reinhold, New York, 1967) p. 38.
4. K. S. Wilson,Plating 59 (1972) 226.
5. H. Furuya, T. Misaka andY. Tanabe,J. Metal Finishing Soc. Jpn. 32 (1981) 631.