@misc{indiciaed19b12dcac34,
  title = {Description of the weighted regression and quality estimation used in the earthquake location program HYPOELLIPSE},
  author = {J.C. Lahr},
  year = {1984},
  doi = {10.3133/ofr84766},
  url = {https://pubs.usgs.gov/publication/ofr84766},
  note = {Source identifier: ofr84766}
}