@book{
international1986iaea,
title={Isotope and Radiation Techniques for Efficient Water and Fertilizer Use in Semi-arid Regions (Results of a 5-year Co-ordinated Research Programme)},
series={TECDOC Series},
number={372},
year={1986},
url={http://www.dgdingfa.net/publications/627/isotope-and-radiation-techniques-for-efficient-water-and-fertilizer-use-in-semi-arid-regions-results-of-a-5-year-co-ordinated-research-programme},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}