@misc{indiciaedf4100636ca9,
  title = {Graphic and algebraic solutions of the discordant lead-uranium age problem},
  author = {L. R. Stieff and T. W. Stern},
  year = {1961},
  doi = {10.1016/0016-7037(61)90116-8},
  url = {https://pubs.usgs.gov/publication/70010750},
  note = {Source identifier: 70010750}
}