@misc{indiciaec607e1eae05c,
  title = {A Hewlett-Packard 9830A BASIC language program for plumbotectonics},
  author = {Robert E. Zartman and Bruce R. Doe},
  year = {1980},
  doi = {10.3133/ofr801088},
  url = {https://pubs.usgs.gov/publication/ofr801088},
  note = {Source identifier: ofr801088}
}