@book{ international1987iaea, title={Research and Development of Controlled Release Technology for Agrochemicals Using Isotopes (Report of a seminar, Vienna, 1-5 July 1985)}, series={TECDOC Series}, number={404}, year={1987}, url={http://www.dgdingfa.net/publications/659/research-and-development-of-controlled-release-technology-for-agrochemicals-using-isotopes-report-of-a-seminar-vienna-1-5-july-1985}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }