@misc{indiciaeb71b019c0574,
  title = {Uranium-lead concordia-discordia intercepts; a program for the TI-59 programmable calculator},
  author = {Gordon Haxel and J.E. Wright},
  year = {1982},
  doi = {10.3133/ofr82898},
  url = {https://pubs.usgs.gov/publication/ofr82898},
  note = {Source identifier: ofr82898}
}