@misc{indiciaefa0083224804,
  title = {30-cm mercury ion thruster technology},
  author = {Poeschel, R. L. and Beattie, J. R. and Robinson, P. A. and Ward, J. W.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820031899},
  note = {Source identifier: 19820031899}
}