@misc{indiciaeec50a1904f6e,
  title = {Controlled photomosaic of part of the Elysium Mons Region of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1985},
  doi = {10.3133/i1771},
  url = {https://pubs.usgs.gov/publication/i1771},
  note = {Source identifier: i1771}
}