@misc{indiciaee51279b4bf09,
  title = {Evaluation of the lead-alpha (Larsen) method for determining ages of igneous rocks},
  author = {David Gottfried and Howard W. Jaffe and Frank E. Senftle},
  year = {1959},
  doi = {10.3133/b1097a},
  url = {https://pubs.usgs.gov/publication/b1097A},
  note = {Source identifier: b1097A}
}