@book{
international2009iaea,
title={Worldwide Open Proficiency Test on the Determination of Radionuclides in Spinach, Soil and Water},
series={Analytical Quality in Nuclear Applications Series},
number={8},
year={2009},
url={http://www.dgdingfa.net/publications/8051/worldwide-open-proficiency-test-on-the-determination-of-radionuclides-in-spinach-soil-and-water},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}