@misc{indiciaecb5ac08afdef,
  title = {Determination of the thickness of frozen ground},
  author = {Andre Cailleux and Emile Thellier and Severine Britt},
  year = {1951},
  doi = {10.3133/ofr5114b},
  url = {https://pubs.usgs.gov/publication/ofr5114B},
  note = {Source identifier: ofr5114B}
}