@misc{indiciaeef31f9ef9987,
  title = {Progress in modeling the ionospheric peak and topside electron density},
  author = {Bilitza, D. and Hoegy, W. R. and Pallaschke, S. and Rush, C. M. and Matuura, N and Rawer, K.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880033575},
  note = {Source identifier: 19880033575}
}