@misc{indiciae0d60acd4721a,
  title = {Changes in the topside ionosphere during a large magnetic storm.},
  author = {Andrews, M. K. and Titheridge, J. E.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670057576},
  note = {Source identifier: 19670057576}
}