@misc{indiciae31d8488b4582,
  title = {Observations of the northern seasonal polar cap on Mars: I. Spring sublimation activity and processes},
  author = {C.J. Hansen and Shane Byrne and Ganna Portyankina and Mary C. Bourke and Colin M. Dovichin and Alfred S. McEwen and Michael T. Mellon and Antoine Pommerol and N. Thomas},
  year = {2013},
  doi = {10.1016/j.icarus.2012.09.024},
  url = {https://pubs.usgs.gov/publication/70047201},
  note = {Source identifier: 70047201}
}