1. G.M. Sullivan, Asia Pacific Interfinish ’94, Australasian Institute of Metal Finish, Paper 35, (1994).
2. D.J. McCoy, in: Proceedings of the Second AESP/EPA Chromium Colloquium, Miami, February 1990.
3. Agency for Toxic Substances, “Toxicological Profile for Chromium”, US Public Health Service, Report No. ATSDR/TP-88/10, July 1989.
4. B.R.W. Hinton, Metal Finishing, p.55, September 1991.
5. Structural Inorganic Chemistry;Wells,1962