@misc{indiciae46e60f308a67,
  title = {Solar corona electron density distribution},
  author = {Esposito, P. B. and Edenhofer, P. and Lueneburg, E.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800060993},
  note = {Source identifier: 19800060993}
}