@book{
      international2018iaea,
      title={SSDL Newsletter Issue No. 68, September 2018},
      author={ },
      series={entity},
      number={68 },
      year={2018},
      isbn={ },
      url={/publications/13460/ssdl-newsletter-issue-no-68-september-2018 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }