@article{Richards2014a,
  author = "P. G. Richards and M. J. Nicolls and J.-P. St.-Maurice and L. Goodwin and J. M. Ruohoniemi",
  title = "Investigation of sudden electron density depletions observed in the dusk sector by the Poker Flat, Alaska incoherent scatter radar in summer",
  year =  2014 ,
  journal = "J. Geophys. Res.",
  volume = 119,
  pages = "10608-10620",
  keywords = "amisr, pfisr, pfrr",
  doi = "10.1002/2014JA020541"
}