1. Chlorine-36 in the terrestrial environment;Bentley,1986
2. Palaeoclimatic trends deduced from the hydrochemistry of a Triassic sandstone aquifer, United Kingdom;Bath,1979
3. Environmental isotope studies in two aquifer systems: a comparison of groundwater dating methods;Andrews,1984
4. Table of Radioactive Isotopes;Browne,1986
5. Cosmic ray produced radioactivity on the earth;Lal,1967