@article{NSR1993HI07,
  author="M. {Hirsch} and X. R. {Wu} and H. V. {Klapdor-Kleingrothaus} and C. -R. {Ching} and T. -H. {Ho}",
  title="Matrix Elements for 0 $\nu$ $\beta \beta$ Decay Calculated with the Operator Expansion Method and QRPA Wave Functions",
  journal="Z.Phys.",
  year=1993,
  volume="A345",
  pages="163"
}
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