@misc{indiciaeeacefac41117,
  title = {Artificial auroral experiment - Ground-based optical observations},
  author = {Davis, T. N. and Hallinan, T. J. and Hess, W. N. and Mead, G. D. and Mead, J. M. and Trichel, M. C.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710059189},
  note = {Source identifier: 19710059189}
}