@misc{indiciaeeab25310c460,
  title = {A computer program to convert raw Pb-U-Th isotope ratios to blank-corrected isotope ratios and concentrations, with associated errors and error-correlations},
  author = {K.R. Ludwig},
  year = {1982},
  doi = {10.3133/ofr82820},
  url = {https://pubs.usgs.gov/publication/ofr82820},
  note = {Source identifier: ofr82820}
}