@misc{indiciaeccae69e3cefc,
  title = {HYPOELLIPSE: A computer program for determining local earthquake hypocentral parameters, magnitude, and first motion pattern},
  author = {John C. Lahr},
  year = {1979},
  doi = {10.3133/ofr79431},
  url = {https://pubs.usgs.gov/publication/ofr79431},
  note = {Source identifier: ofr79431}
}