@article{Scheiderer2017-08Posit-40218,
  year={2017},
  doi={10.1007/s00013-017-1054-z},
  title={A Positivstellensatz for forms on the positive orthant},
  number={2},
  volume={109},
  issn={0003-889X},
  journal={Archiv der Mathematik},
  pages={123--131},
  author={Scheiderer, Claus and Tan, Colin}
}

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