@misc{indiciaee861d61eda38,
  title = {HYPOELLIPSE; a computer program for determining local earthquake hypocentral parameters, magnitude, and first-motion pattern},
  author = {John C. Lahr},
  year = {1999},
  doi = {10.3133/ofr9923},
  url = {https://pubs.usgs.gov/publication/ofr9923},
  note = {Source identifier: ofr9923}
}