@misc{indiciae3e6c8c46ef4f,
  title = {Algebraic and graphic methods for evaluating discordant lead-isotope ages},
  author = {Lorin Rollins Stieff and T. W. Stern and Ralph Newton Eicher},
  year = {1963},
  doi = {10.3133/pp414e},
  url = {https://pubs.usgs.gov/publication/pp414E},
  note = {Source identifier: pp414E}
}