@book{ international2020iaea, title={Industrial Applications of Sealed Radioactive Sources}, series={TECDOC Series}, number={1925}, year={2020}, isbn={978-92-0-117020-0}, url={http://www.dgdingfa.net/publications/12220/industrial-applications-of-sealed-radioactive-sources}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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