@misc{indiciae0464dde8edb6,
  title = {The MSFC experimental development program for lunar surface navigation equipment},
  author = {Broussard, P. H., Jr. and Mastin, W. C. and Walls, B. F.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700054342},
  note = {Source identifier: 19700054342}
}