@misc{indiciae0a75eda58ece,
  title = {Diffusive equilibrium in the topside equatorial ionosphere.},
  author = {Norton, R. B. and Rishbeth, H. and Vanzandt, T. E.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670039968},
  note = {Source identifier: 19670039968}
}