@book{
      international1999iaea,
      title={Radiation Protection and Safety in Industrial Radiography},
      author={ },
      series={entity},
      number={13 },
      year={1999},
      isbn={92-0-100399-4 },
      url={/publications/5146/radiation-protection-and-safety-in-industrial-radiography },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }