@misc{indiciae01e7641e3f1e,
  title = {Past permafrost on the Mid-Atlantic coastal plain, eastern United States},
  author = {H. French and M. Demitroff and Wayne L. Newell},
  year = {2009},
  doi = {10.1002/ppp.659},
  url = {https://pubs.usgs.gov/publication/70036818},
  note = {Source identifier: 70036818}
}