@book{
      international2005iaea,
      title={Categorization of Radioactive Sources},
      author={ },
      series={entity},
      number={RS-G-1.9 },
      year={2005},
      isbn={92-0-103905-0 },
      url={/publications/7237/categorization-of-radioactive-sources },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }