@misc{indiciae4aedd9407c13,
  title = {An engineering model 30 cm ion thruster},
  author = {Poeschel, R. L. and King, H. J. and Schnelker, D. E.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740029487},
  note = {Source identifier: 19740029487}
}