@book{ international1989iaea, title={Isotope Techniques in the Study of the Hydrology of Fractured and Fissured Rocks}, series={Panel Proceedings Series}, year={1989}, isbn={92-0-141189-8}, url={http://www.dgdingfa.net/publications/3660/isotope-techniques-in-the-study-of-the-hydrology-of-fractured-and-fissured-rocks}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }