@book{
      international1981iaea,
      title={IAEA Safeguards: An Introduction},
      author={ },
      series={entity},
      number={3 },
      year={1981},
      isbn={92-0-179081-3 },
      url={/publications/1067/iaea-safeguards-an-introduction },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }