@misc{indiciae53729f69e1a7,
  title = {Program of large high perveance ionizer studies},
  author = {Beynon, J. C. and Forbes, S. G. and Kidd, P. W.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660010474},
  note = {Source identifier: 19660010474}
}