@misc{indiciae484d19156bdf,
  title = {Hydrogen hollow cathode ion source},
  author = {Mirtich, M. J., Jr. and Sovey, J. S. and Roman, R. F.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800024678},
  note = {Source identifier: 19800024678}
}