@misc{indiciae22cdccee727e,
  title = {Seasonal H2O and CO2 ice cycles at the Mars Phoenix landing site: 1. Prelanding CRISM and HiRISE observations},
  author = {Selby Cull and Raymond E. Arvidson and Michael T. Mellon and Sandra M. Wiseman and Roger N. Clark and Timothy N. Titus and Richard V. Morris and Patrick E. McGuire},
  year = {2010},
  doi = {10.1029/2009je003340},
  url = {https://pubs.usgs.gov/publication/70202252},
  note = {Source identifier: 70202252}
}