@book{
  international2002iaea,
  title={X ray Fluorescence in the IAEA and its Member States Newsletter No. 4,  September 2002},
  series={XRF Newsletter},
  number={04},
  year={2002},
  url={https://www.iaea.org/publications/6705/x-ray-fluorescence-in-the-iaea-and-its-member-states-newsletter-no-4-september-2002},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}