@misc{indiciaeb2af78ffb17c,
  title = {Changing permafrost and its impacts},
  author = {Terry V. Callaghan and Margareta Johansson and Barrie Bonsal and Hanne H. Christiansen and Arne Instanes and Vladimir E. Romanovsky and Sharon A. Smith},
  year = {2011},
  url = {https://pubs.usgs.gov/publication/70157193},
  note = {Source identifier: 70157193}
}