@book{
      international1960iaea,
      title={Large Radiation Sources in Industry},
      author={ },
      series={entity},
      number={ },
      year={1960},
      isbn={92-0-060060-3 },
      url={/publications/1479/large-radiation-sources-in-industry },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }