@book{ international2001iaea, title={Isotope Based Assessment of Groundwater Renewal in Water Scarce Regions}, series={TECDOC Series}, number={1246}, year={2001}, url={http://www.dgdingfa.net/publications/6226/isotope-based-assessment-of-groundwater-renewal-in-water-scarce-regions}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }