@misc{indiciae06b19680b9cf,
  title = {Large-scale ionospheric irregularities deduced from Faraday rotation observations at three stations.},
  author = {Narayana Rao, N. and Yeh, K. C.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680048477},
  note = {Source identifier: 19680048477}
}