@article{NSR1953PO01,
  author="W. {Porschen} and W. {Riezler}",
  title="Naturliche Radioaktivitat von Wolfram",
  journal="Z.Naturforsch.",
  year=1953,
  volume="8a",
  pages="502"
}
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*  Note: Translation from NSR format to bibTex is imperfect. Entries       *
*    may require editing before use. This is especially true for           *
*    "secondary" sources such as conference proceedings, lab reports, etc. *
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