@book{
      international1990iaea,
      title={Extension of the Principles of Radiation Protection to Sources of Potential Exposure},
      author={ },
      series={entity},
      number={104 },
      year={1990},
      isbn={92-0-123590-9 },
      url={/publications/3702/extension-of-the-principles-of-radiation-protection-to-sources-of-potential-exposure },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }