@misc{indiciaef99e69f88fcd,
  title = {Plasma particle simulation of electrostatic ion thrusters},
  author = {Peng, Xiaohang and Keefer, Dennis and Ruyten, Wilhelmus},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900055556},
  note = {Source identifier: 19900055556}
}