@article{Wiedenbeck:2019ga,
  author = "Wiedenbeck, M. E.  and  Mason, G. M.  and  Cohen, C. M. S.  and  McComas, D. J.  and  Christian, E. R.",
  title = "{Occurrence of $^3$He-rich Solar Energetic Particles near Earth and Closer to the Sun}",
  doi = "10.22323/1.358.1171",
  journal = "PoS",
  year = 2019,
  volume = "ICRC2019",
  pages = "1171"
}