@misc{indiciae4aa908649403,
  title = {TES premapping data: Slab ice and snow flurries in the Martian north polar night},
  author = {Timothy N. Titus and Hugh H. Kieffer and Kevin F. Mullins and Phillip R. Christensen},
  year = {2001},
  doi = {10.1029/2000je001284},
  url = {https://pubs.usgs.gov/publication/70022977},
  note = {Source identifier: 70022977}
}