@misc{indiciaea58454f57ea3,
  title = {The Schwartzwalder uranium deposit, II: Age of uranium mineralization and lead isotope constraints on genesis},
  author = {K.R. Ludwig and A. R. Wallace and K. R. Simmons},
  year = {1985},
  doi = {10.2113/gsecongeo.80.7.1858},
  url = {https://pubs.usgs.gov/publication/70013073},
  note = {Source identifier: 70013073}
}