@misc{indiciae21f2ba394937,
  title = {Geologic map of MTM -40252 and -40257 quadrangles, Reull Vallis region of Mars},
  author = {Scott C. Mest and David A. Crown},
  year = {2002},
  doi = {10.3133/i2730},
  url = {https://pubs.usgs.gov/publication/i2730},
  note = {Source identifier: i2730}
}