@book{
      international1999iaea,
      title={Assessment of Occupational Exposure Due to External Sources of Radiation},
      author={ },
      series={entity},
      number={RS-G-1.3 },
      year={1999},
      isbn={92-0-101799-5 },
      url={/publications/5742/assessment-of-occupational-exposure-due-to-external-sources-of-radiation },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }