@misc{indiciae8f67807f9b30,
  title = {ELECTRIC PROPULSION FOR MANNED MISSIONS},
  author = {Denington, R. J. and Legray, W. J. and Shattuck, R. D.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19630028183},
  note = {Source identifier: 19630028183}
}