@misc{indiciaeec69fc370b57,
  title = {Ion engine endurance testing at high background pressures},
  author = {Brophy, John R. and Pless, Lewis C. and Garner, Charles E.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920071390},
  note = {Source identifier: 19920071390}
}