@book{
  internationaliaea,
  title={IAEA Laboratory Activities - Sixth Report (1969)},
  series={Technical Reports Series},
  number={98},
  year={},
  isbn={92-0-175169-9},
  url={https://www.iaea.org/publications/1197/iaea-laboratory-activities-sixth-report-1969},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}