@misc{indiciaebde76bc5dfde,
  title = {An assessment of uranium in groundwater in the Grand Canyon region},
  author = {Fred D. Tillman and Kimberly R. Beisner and Jessica R. Anderson and Joel A. Unema},
  year = {2021},
  doi = {10.1038/s41598-021-01621-8},
  url = {https://pubs.usgs.gov/publication/70227429},
  note = {Source identifier: 70227429}
}