@article{Themens2018a,
  author = "D. R. Themens and P. T. Jayachandran and D. Bilitza and P. J. Erickson and I. Haggstrom and M. V. Lyashenko and B. Reid and R. H. Varney and L. Pustovalova",
  title = "Topside electron density representations for middle and high latitudes: A topside parameterization for E-CHAIM based on the NeQuick",
  year =  2018 ,
  journal = "Journal of Geophysical Research: Space Physics",
  publisher = "American Geophysical Union",
  volume = 123,
  keywords = "pfisr, risrn",
  doi = "10.1002/2017JA024817"
}