@misc{indiciae9562637acc88,
  title = {Depositional setting and geochemistry of phosphorites and metalliferous black shales in the Carboniferous-Permian Lisburne Group, Northern Alaska},
  author = {Julie A. Dumoulin and John F. Slack and Michael T. Whalen and Anita G. Harris},
  year = {2011},
  doi = {10.3133/pp1776c},
  url = {https://pubs.usgs.gov/publication/pp1776C},
  note = {Source identifier: pp1776C}
}