@misc{indiciaef97dc82ef5b0,
  title = {Solar-Powered Electric Propulsion Systems: Engineering and Applications},
  author = {Stearns, J. W. and Kerrisk, D. J.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19990109975},
  note = {Source identifier: 19990109975}
}