@misc{indiciae61f8f7610d50,
  title = {Electron-density variations at 1000 kilometers.},
  author = {Dayharsh, T. I. and Farley, W. W., 1v},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660033384},
  note = {Source identifier: 19660033384}
}