@book{
  international2011iaea,
  title={Radiation Safety in Industrial Radiography},
  series={Specific Safety Guide},
  number={SSG-11},
  year={2011},
  isbn={978-92-0-107210-8},
  url={https://www.iaea.org/publications/8500/radiation-safety-in-industrial-radiography},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}