@book{ international2010iaea, title={Almera Proficiency Test: Detremination of Gamma Emitting Radionuclides in Simulated Air Filters}, series={Analytical Quality in Nuclear Applications Series}, number={16}, year={2010}, url={http://www.dgdingfa.net/publications/8460/almera-proficiency-test-detremination-of-gamma-emitting-radionuclides-in-simulated-air-filters}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }