@misc{indiciae16c435a0737d,
  title = {Autonomous precision landing using terrain-following navigation},
  author = {Vaughan, R. M. and Gaskell, R. W. and Halamek, P. and Klumpp, A. R. and Synnott, S. P.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19930033909},
  note = {Source identifier: 19930033909}
}