@misc{indiciae15cd9ebdda2b,
  title = {Efficient passive image-based hazard detection for safe landing on Mars},
  author = {Cheng, Y. and Matthies, L. H. and Johnson, A. E. and Wolf, A. A.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20060040510},
  note = {Source identifier: 20060040510}
}