1. Jekel, M. R., Removal of arsenic in drinking water treatment, in Arsenic in the Environment, 1st ed. (ed. Nriagu, J. O.), New York: John Wiley & Sons Inc., 1994.
2. BGS, Arsenic in Groundwaters from Major Aquifers: Sources, Effects and Potential Mitigation, London: British Geological Survey, 2000.
3. Smith, A. H., Cancer risks from As in drinking water, Environ. Health Persp., 1992, 97: 259–262.
4. WHO, Guidelines for drinking water quality, Vol. 2, Health Criteria and Other Supporting Information, 2nd ed., Geneva: WHO, 1996.
5. USEPA Life Systems, Draft Drinking Water Criteria Documents on As, Washington: USEPA Contract 68-C8-0033, 1993.