@misc{indiciae71e1e9092e25,
  title = {Electric propulsion system technology},
  author = {Brophy, John R. and Garner, Charles E. and Goodfellow, Keith D. and Pivirotto, Thomas J. and Polk, James E.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19940008595},
  note = {Source identifier: 19940008595}
}