@misc{indiciae582103f0b4ce,
  title = {Discovery of alunite in Cross crater, Terra Sirenum, Mars: Evidence for acidic, sulfurous waters},
  author = {Bethany L. Ehlmann and Gregg A. Swayze and Ralph E. Milliken and John F. Mustard and Roger N. Clark and Scott L. Murchie and George N. Breit and James J. Wray and Brigitte Gondet and Francois Poulet and John Carter and Wendy M. Calvin and William Benzel and Kimberly D. Seelos},
  year = {2016},
  doi = {10.2138/am-2016-5574},
  url = {https://pubs.usgs.gov/publication/70185026},
  note = {Source identifier: 70185026}
}