@misc{indiciaed2cf04623ce9,
  title = {Some estimates of the thermal effects of a heated pipeline in permafrost},
  author = {Arthur H. Lachenbruch},
  year = {1970},
  doi = {10.3133/cir632},
  url = {https://pubs.usgs.gov/publication/cir632},
  note = {Source identifier: cir632}
}