@misc{indiciae7b650a062f9c,
  title = {Obstacle detection for the Mars Rover by a two dimensional rapid estimation scheme},
  author = {Alland, S. and Shen, C. N.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780059143},
  note = {Source identifier: 19780059143}
}