@misc{indiciae38db7ccffc78,
  title = {Uranium-bearing lignite and carbonaceous shale in the southwestern part of the Williston Basin: A regional study; with a section on heavy minerals in Cretaceous and Tertiary rocks associated with uranium occurrences},
  author = {N.M. Denson and James R. Gill and Wayne A. Chisholm},
  year = {1965},
  doi = {10.3133/pp463},
  url = {https://pubs.usgs.gov/publication/pp463},
  note = {Source identifier: pp463}
}