@misc{indiciae17a0859a5f12,
  title = {Electric Propulsion: Experimental Research},
  author = {Ruyten, W. M. and Friedly, V. J. and Keefer, D.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19960022552},
  note = {Source identifier: 19960022552}
}