1. Radionuclides in drinking water;Aieta;Journal of American Water Works Association,1987
2. American Public Health Association (APHA). 1985. Standard methods for the examination of water and wastewater, (16ed.). American Public Health Association, Washington, New York.
3. Natural radioactivity of drinking water in Finland;Asikainen;Health Physics,1980
4. Comissão Nacional de Energia Nuclear (CNEN). (1988). Diretrizes Básicas de Radioproteção, CNEN NE 3.01, Rio de Janeiro.
5. Cothern, C. R. & Rebers, P. A. (1990). Radon, radium and uranium in drinking water. Lewis Publishers Inc. Chelsea, Michigan, USA.