@book{ international1966iaea, title={Criticality Control of Fissile Materials (Stockholm, 1-5 Nov. 1965)}, series={Proceedings Series}, year={1966}, isbn={92-0-020066-4}, url={http://www.dgdingfa.net/publications/2068/criticality-control-of-fissile-materials-stockholm-1-5-nov-1965}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }