@misc{indiciaecd8517ab3b15,
  title = {The MPD thruster program at JPL},
  author = {Barnett, John and Goodfellow, Keith and Polk, James and Pivirotto, Thomas},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920000828},
  note = {Source identifier: 19920000828}
}