@misc{indiciae1931cddf4296,
  title = {Weak double layers in the auroral ionosphere},
  author = {Hudson, M. K. and Crystal, T. L. and Lotko, W. and Barnes, C.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870013893},
  note = {Source identifier: 19870013893}
}