@misc{indiciae73997d78fead,
  title = {Ionospheric simulator survey},
  author = {Barrington, A. E. and Schultz, E. D. and Sharma, A. and Sullivan, J. O.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660018022},
  note = {Source identifier: 19660018022}
}