@misc{indiciaed11d057b9d20,
  title = {Shaded relief map of the Elysium Quadrangle of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1978},
  doi = {10.3133/i1131},
  url = {https://pubs.usgs.gov/publication/i1131},
  note = {Source identifier: i1131}
}