1. Aegerter SK, Loosli HH, Oeschger H (1967) Variation in the production of cosmogenic radionuclides. In: Radioactive dating and methods of low-level counting: proceed symp, IAEA, Vienna, pp 49–55
2. Afanasenko EA, Morkovkina IK, Romanov VV (1973) Age of groundwater in the Tas-Khayat Ridge and Selennyakh depression. Bull Moscow Univ, Ser Geol 5:105–109
3. Afanasyev AP (1960) Water balance of Baykal Lake. Proc Baykal Limnol Stn 18:85–95
4. Allison GB, Hughes MW (1974) Environmental tritium in the unsaturated zone: estimation of recharge to an unconfined aquifer. In: Isotope techniques in groundwater hydrology: proceedings of a symposium, IAEA, Vienna, 11–15 March 1974, pp 57–70
5. Andersen LJ, Sevel T (1974) Six years’ environmental tritium profiles in the unsaturated and saturated zones. In: Isotope techniques in groundwater hydrology: proceeding symp, vol 1, IAEA, Vienna, pp 3–18