@misc{indiciaeeb1652764a7c,
  title = {Geologic map of the western Ophir Planum region (MTM -10067) of Mars},
  author = {Richard A. Schultz},
  year = {1998},
  doi = {10.3133/i2588m},
  url = {https://pubs.usgs.gov/publication/i2588M},
  note = {Source identifier: i2588M}
}