@misc{indiciae618bc34a7452,
  title = {PC-PLOT, and IBM-PC compatible version of the earthquake plotting program QPLOT},
  author = {T.L. Murray and J.A. Power and F. W. Klein},
  year = {1993},
  doi = {10.3133/ofr9322b},
  url = {https://pubs.usgs.gov/publication/ofr9322B},
  note = {Source identifier: ofr9322B}
}