@misc{indiciae299c85e7b2ec,
  title = {Evaluation and selection of Reusable Nuclear Shuttle navigation system concepts},
  author = {Elliott, D. F. and Grier, D. R. and Wolfe, J. F.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710054378},
  note = {Source identifier: 19710054378}
}