1. Guidlines for Drinking Water Quality, 2nd ed., Geneva: World Health Organization, 1996, vol. 2, p. 147.
2. Iffland, R., in Handbooks on Toxicity of Inorganic Compounds, New York: Marcel Dekker, 1988, part 7, p. 67.
3. Fowler, B.A. and Goering, P.L., in Metals and Their Compounds in Environment, Weinheim: VCH, 1991, p. 743.
4. Motolla, H.A., Kinetic Aspects of Analytical Chemistry, New York: Wiley, 1988.
5. Perez-Bendito, D. and Silva, M., Kinetic Methods in Analytical Chemistry, Chichester: Horwood, 1988.