@misc{indiciae22c3af60a7bb,
  title = {Guidance and navigation for comet rendezvous missions},
  author = {Fraser, D. and Malchow, H. L. and Sackett, L.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710057216},
  note = {Source identifier: 19710057216}
}