@book{
      international2003iaea,
      title={Categorization of Radioactive Sources},
      author={ },
      series={entity},
      number={1344 },
      year={2003},
      isbn={92-0-105903-5 },
      url={/publications/6808/categorization-of-radioactive-sources },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }