@misc{indiciaeb2350a1a2ccd,
  title = {Passive imaging based hazard avoidance for spacecraft safe landing},
  author = {Cheng, Y. and Johnson, A. E. and Mattheis, L. H. and Wolf, A. A.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20060031528},
  note = {Source identifier: 20060031528}
}