@misc{indiciae20cc5e71b3a7,
  title = {Surface properties of Mars' polar layered deposits and polar landing sites},
  author = {Ashwin R. Vasavada and Jean-Pierre Williams and David A. Paige and Kenneth E. Herkenhoff and Nathan T. Bridges and Ronald Greeley and Bruce C. Murray and Deborah S. Bass and Karen S. McBride},
  year = {2000},
  doi = {10.1029/1999je001108},
  url = {https://pubs.usgs.gov/publication/70022934},
  note = {Source identifier: 70022934}
}