@misc{indiciae9188818b495a,
  title = {Preliminary geological assessment of the Northern edge of Ultimi Lobe, Mars South Polar layered deposits},
  author = {B. Murray and M. Koutnik and S. Byrne and Laurence A. Soderblom and Kenneth E. Herkenhoff and K. L. Tanaka},
  year = {2001},
  doi = {10.1006/icar.2001.6657},
  url = {https://pubs.usgs.gov/publication/70023366},
  note = {Source identifier: 70023366}
}