@article{NSR1963YN02,
  author="J. L. {Yntema} and S. S. {Hanna} and R. E. {Segel}",
  title="Search for Bound States in He$^{4}$",
  journal="Bull.Am.Phys.Soc.",
  year=1963,
  volume="8",
  pages="No.7, 537, S5"
}
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