1. Drinking Water Standards – 1962, US Department of Health, Education and Welfare, Public Health Service, Washington DC 1962, p. 47.
2. Dietary vitamin E and selenium and toxicity of nitrite and nitrate
3. , , in Water Supply, 3rd ed. (), Scotland 1985.
4. AOAC Official Method 973.31, AOAC Official Meth. Anal. 1997, Suppl. 8.
5. Ion chromatographic determination of nitrate and nitrite in meat products