@misc{indiciae52cb86e6f9e6,
  title = {Manually-aided on-board Apollo cislunar navigation},
  author = {Brennan, P. J. and Johnson, I. S.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710029813},
  note = {Source identifier: 19710029813}
}