1. International Agency for Research on Cancer. Chromium, nickel and welding. In: IARC monographs on the evaluation of carcinogenic risks to humans, vol. 49. Lyon, France: IARC; 1990.
2. Threshold mechanisms and site specificity in chromium(VI) carcinogenesis
3. U.S. Department of Health and Human Services. U.S. Department of Health and Human Services Toxicological profile for chromium. Springfield, Va.: Agency for Toxic Substances and Disease Registry U.S. Department of Commerce. 2000.