@misc{indiciaea2b22cde5d9f,
  title = {Epigenetic uranium deposits in the United States},
  author = {Arthur P. Butler and W.I. Finch and William Stephens Twenhofel},
  year = {1961},
  doi = {10.3133/ofr6129},
  url = {https://pubs.usgs.gov/publication/ofr6129},
  note = {Source identifier: ofr6129}
}