@misc{indiciae63920ef60a72,
  title = {Meter-scale morphology of the north polar region of mars},
  author = {Kenneth E. Herkenhoff and S. Byrne and P.S. Russell and K.E. Fishbaugh and A. S. McEwen},
  year = {2007},
  doi = {10.1126/science.1143544},
  url = {https://pubs.usgs.gov/publication/70030058},
  note = {Source identifier: 70030058}
}