@article{NSR1971BE64,
  author="A. A. {Bergman} and Y. Y. {Stavisskii} and V. B. {Chelnokov} and A. E. {Samsonov} and V. A. {Tolstikov} and A. N. {Medvedev}",
  title="Ratio of Neutron Cross Sections of Radiative Capture and Fission for Pu$^{239}$ in the Energy Region below 50 keV",
  journal="Yad.Fiz.",
  year=1971,
  volume="14",
  pages="1123"
}
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