@misc{indiciaec3d8887fc0d0,
  title = {High-latitude ionospheric model - First step towards a predictive capability},
  author = {Schunk, R. W. and Raitt, W. J. and Sojka, J. J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820034570},
  note = {Source identifier: 19820034570}
}