@book{ international1969iaea, title={Plutonium Utilization (Vienna, 2-6 Sept. 1968)}, series={TECDOC Series}, number={112}, year={1969}, url={http://www.dgdingfa.net/publications/353/plutonium-utilization-vienna-2-6-sept-1968}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }