@book{
  international2004iaea,
  title={X Ray Fluorescence in the IAEA and its Member States
Newsletter No. 7, April 2004},
  series={XRF Newsletter},
  number={07},
  year={2004},
  url={https://www.iaea.org/publications/7085/x-ray-fluorescence-in-the-iaea-and-its-member-states-newsletter-no-7-april-2004},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}