@misc{indiciae0794ed4cfe1a,
  title = {Geologic Map of the MTM-20272 and-25272 Quadrangles, Tyrrhena Terra Region of Mars},
  author = {Scott C. Mest and David A. Crown},
  year = {2006},
  doi = {10.3133/sim2934},
  url = {https://pubs.usgs.gov/publication/sim2934},
  note = {Source identifier: sim2934}
}