@misc{indiciaed2324bd38b16,
  title = {VARIATIONS OF IONOSPHERIC ELECTRON CONTENT DURING DISTURBANCES},
  author = {Chow, H. and Yeh, K. C.},
  year = {1961},
  url = {https://ntrs.nasa.gov/citations/19620000959},
  note = {Source identifier: 19620000959}
}