@misc{indiciaeef3edea223fa,
  title = {HYPOELLIPSE/MULTICS: A computer program for determining local earthquake hypocentral parameters, magnitude, and first motion pattern},
  author = {J.C. Lahr},
  year = {1979},
  doi = {10.3133/ofr8059},
  url = {https://pubs.usgs.gov/publication/ofr8059},
  note = {Source identifier: ofr8059}
}