@article{Wiedenbeck:2016qs,
  author = "Wiedenbeck, M. E.  and  Cohen, Christina  and  Klassen, Andreas  and  Leske, Richard  and  Liewer, Paulett  and  Mason, Glenn  and  Nitta, Nariaki",
  title = "{Constraints on Mechanisms for Longitudinal Spreading of Impulsive SEPs from Multispacecraft Observations of Scatter-free Even}",
  doi = "10.22323/1.236.0106",
  journal = "PoS",
  year = 2016,
  volume = "ICRC2015",
  pages = "106"
}