@misc{indiciae2f8f26fb7b2d,
  title = {Telecommunications and navigation systems design for manned Mars exploration missions},
  author = {Hall, Justin R. and Hastrup, Rolf C.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900044879},
  note = {Source identifier: 19900044879}
}