@article{NSR1951PR20,
  author="P. {Preiswerk} and P. {Stahelin}",
  title="Termschemata einiger Niobisotope",
  journal="Helv.Phys.Acta",
  year=1951,
  volume="24",
  pages="300"
}
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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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