@misc{indiciae1ff5eb52beb3,
  title = {Ring-cusp ion thruster with shell anode},
  author = {Sovey, J. S. and Rawlin, V. K. and Roman, R. F.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850012946},
  note = {Source identifier: 19850012946}
}