1. A. A. Baker, S. J. Harris, and E. Holmes, Metals and Mtls. 1 (1967) 211.
2. W. H. Safranek and C. L. Faust, Plating 41 (1954) 1159, and USA Patent 2854, 388 (1958).
3. J. Schmidt and I. J. Hess, ibid 53 (1966) 229, and NASA CR-197.
4. E. Raub and Muller, ?Fundamentals of Electrodeposition? (Elsevier, London, 1967) p. 198.
5. ?Vapour Deposition?, edited by C. F. Powell, J. H. Oxley and J. M. Blocker Jnr. (John Wiley and Sons New York, 1966).