@misc{indiciae43647ace7e21,
  title = {Microwave radiation from the helium negative glow},
  author = {Brown, W., III and Caron, P. R. and Haroules, G.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710041997},
  note = {Source identifier: 19710041997}
}