@misc{indiciae8d5d9473028f,
  title = {Ring cusp/hollow cathode discharge chamber performance studies},
  author = {Vaughn, J. A. and Wilbur, Paul J.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890018377},
  note = {Source identifier: 19890018377}
}