@misc{indiciae8a81c365ae88,
  title = {Direct dating of mineralization at Goldfield, Nevada, by potassium-argon and fission-track methods},
  author = {Roger P. Ashley and M.L. Silberman},
  year = {1976},
  doi = {10.2113/gsecongeo.71.5.904},
  url = {https://pubs.usgs.gov/publication/70209763},
  note = {Source identifier: 70209763}
}