@book{
      international2009iaea,
      title={Proficiency Test of Ukrainian Laboratories Determination of Gamma Emitting Radionuclides},
      author={ },
      series={entity},
      number={6 },
      year={2009},
      isbn={ },
      url={/publications/8186/proficiency-test-of-ukrainian-laboratories-determination-of-gamma-emitting-radionuclides },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }