@book{
      international1997iaea,
      title={Nuclear Data Newsletter Issue No. 23, April 1997},
      author={ },
      series={entity},
      number={23 },
      year={1997},
      isbn={ },
      url={/publications/4874/nuclear-data-newsletter-issue-no-23-april-1997 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }