@article{Shammat2026a,
  author = "M. O. Shammat and B. W. Reinisch and I. Galkin and P. J. Erickson and W. Johnson and S. Karpouzas and J. A. Weitzen and W. C. Rideout",
  title = "High-latitude F2 peak density thickness: a long-term characterization using PFISR measurements",
  year =  2026 ,
  journal = "Advances in Space Research",
  month = "Feb",
  keywords = "ionosphere, peak density thickness, f2 layer, electron density modeling, poker flat incoherent scatter radar, pfisr",
  doi = "https://doi.org/10.1016/j.asr.2026.02.015",
  url = "https://www.sciencedirect.com/science/article/pii/S0273117726001961"
}


@phdthesis{Shammat2023a,
  author = "M. Shammat",
  title = "Multi-Instrument Study of Peak Plasma Density in the Ionosphere",
  year =  2023 ,
  journal = "ProQuest Dissertations and Theses",
  month = "May",
  keywords = "pfisr, digisonde, electron density profiles, incoherent scatter radar, ion composition, ionosphere, topside ionosphere, engineering, geophysics, atomic physics, 0467:geophysical engineering, 0537:engineering, 0748:atomic physics, 0373:geophysics, phdthesis",
  url = "https://www.proquest.com/dissertations-theses/multi-instrument-study-peak-plasma-density/docview/2821571346/se-2",
  note = "Copyright - Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works; Last updated - 2023-11-30",
  school = "University of Massachusetts Lowell"
}