@misc{indiciaebd33e6fee5aa,
  title = {Low-frequency waves and gradient instabilities in the ionosphere.},
  author = {Liu, C. H. and Yeh, K. C.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660059893},
  note = {Source identifier: 19660059893}
}