@misc{indiciaeb4f324547d7e,
  title = {Hypocenter location program HYPOINVERSE: Part I. Users guide to Versions 1, 2, 3, and 4. Part II. Source listings and notes},
  author = {Fred W. Klein},
  year = {1978},
  doi = {10.3133/ofr78694},
  url = {https://pubs.usgs.gov/publication/ofr78694},
  note = {Source identifier: ofr78694}
}