1. Radionuclides in drinking water;Aieta;J. Am. Water Works Assoc.,1987
2. Mechanism of radon release in rock matrices and entry into groundwaters;Andrews;Inst. Mineral. Metal. Trans. B,1972
3. Inert gases in groundwater from the Bunter sandstone of England as indicators of age and palaeoclimatic trends;Andrews;J. Hydrol.,1979
4. Araújo, L.M., França, A.B., Potter, P.E., 1995. Giant Mercosul aquifer of Brazil, Argentina, Uruguay and Paraguay: hydrogeologic maps of Botucatu, Pirambóia, Rosário do Sul, Buena Vista, Misiones and Tacuarembó Formations. Technical Report, Universidade Federal do Paraná, Brasil.
5. The implications of laboratory 222Rn flux measurements to the radioactivity in groundwaters;Bonotto;Appl. Geochem.,1997