@book{
      international2021iaea,
      title={IAEA Safeguards and SSAC Advisory Service (ISSAS) Guidelines},
      author={ },
      series={entity},
      number={13 (Rev.1) },
      year={2021},
      isbn={ },
      url={/publications/14964/iaea-safeguards-and-ssac-advisory-service-issas-guidelines },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }