1. K. OSMOND, J. B. COWART, Groundwater, M. IVANOVICH, H. HHARMON (Eds), Uranium Series Disequilibrium: Applications to Environmental Problems in the Earth Sciences, Oxford University Press, Oxford, 1982, p. 202.
2. J. K. OSMOND, J. B. COWART, M. IVANOVICH, Intern. J. Appl. Radiation Isotopes, 34 (1983) 283
3. A. B. MACKENZIE, R. D. SCOTT, P. LINSALATA, N. MIEKELEY, J. K. OSMOND, D. B. CCURTIS, Poço de Caldas Report, NAGRA NTB 90-25, 1991, p. 185.
4. A. B. MACKENZIE, R. D. SCOTT, P. LINSALATA, N. MIEKELEY, J. Geochem. Explor., 45 (1992) 289.
5. J. N. ROSHOLT, B. R. DOE, M. TATSUMOTO, Geol. Soc. Amer. Bull., 77 (1966) 987.