1. The geomicrobiology of European mines relevant to radioactive waste-disposal;Christofi;British Geol. Surv. Rept. FLPU 85-1,1985
2. Stable carbon isotope ratios and the existence of a gas phase in the evolution of carbonate groundwaters;Deines;Geochim. Cosmochim. Acta,1974
3. Dating of Groundwater;Fontes,1983
4. Some considerations on groundwater dating using environmental isotopes;Fontes,1985
5. Determination of initial 14C activity of the total dissolved carbon: Age estimation of waters in confined aquifers;Fontes,1977