@misc{indiciae0e9b1fe09fe4,
  title = {Development of a portable precision landing system},
  author = {Davis, T. J. and Clary, G. R. and Macdonald, S. L.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870004877},
  note = {Source identifier: 19870004877}
}