@misc{indiciaea503c35b923a,
  title = {Primary electron spectrometer, 18:63 UE: Electrostatic analyzer description and energy spectrum determination},
  author = {Pongratz, M. B.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730018662},
  note = {Source identifier: 19730018662}
}