@misc{indiciae4359c1956eb9,
  title = {Shaded relief and surface markings of the Sidon Flexus region of Europa (sheet 1); airbrush base for the Sidon Flexus region of Europa (sheet 2)},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1984},
  doi = {10.3133/i1499},
  url = {https://pubs.usgs.gov/publication/i1499},
  note = {Source identifier: i1499}
}