@misc{indiciae98cdfd87576f,
  title = {Geologic history of the polar regions of Mars based on Mars Global surveyor data. II. Amazonian period},
  author = {E.J. Kolb and K. L. Tanaka},
  year = {2001},
  doi = {10.1006/icar.2001.6676},
  url = {https://pubs.usgs.gov/publication/70022733},
  note = {Source identifier: 70022733}
}