@misc{indiciae9d845fa601c4,
  title = {Versatility of electrically propelled spacecraft for planetary missions},
  author = {Dailey, C. C. and Hale, D. P. and Katz, L. and Stuhlinger, E.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700034721},
  note = {Source identifier: 19700034721}
}