@misc{indiciae4d73c94b35de,
  title = {Characterizing Extreme Ionospheric Storms},
  author = {Sparks, L. and Komjathy, A. and Altshuler, E.},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20150005912},
  note = {Source identifier: 20150005912}
}