@misc{indiciae1d355dd3555a,
  title = {Geologic Map of the MTM-85000 Quadrangle, Planum Australe Region of Mars},
  author = {Kenneth E. Herkenhoff},
  year = {2001},
  doi = {10.3133/i2686},
  url = {https://pubs.usgs.gov/publication/i2686},
  note = {Source identifier: i2686}
}