@misc{indiciaefe9cf2b151db,
  title = {Observations of the north polar water ice annulus on Mars using THEMIS and TES},
  author = {Kiri L. Wagstaff and Timothy N. Titus and Anton B. Ivanov and Rebecca Castano and Joshua L. Bandfield},
  year = {2008},
  doi = {10.1016/j.pss.2007.08.008},
  url = {https://pubs.usgs.gov/publication/70033550},
  note = {Source identifier: 70033550}
}