@book{
      international2011iaea,
      title={X Ray Fluorescence in the IAEA and its Member States
Newsletter No. 20, December 2010},
      author={ },
      series={entity},
      number={ },
      year={2011},
      isbn={ },
      url={/publications/8677/x-ray-fluorescence-in-the-iaea-and-its-member-states-newsletter-no-20-december-2010 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }