@misc{indiciaed72979452c85,
  title = {The use of waveform shapes to automatically determine earthquake focal depth},
  author = {S.A. Sipkin},
  year = {2000},
  doi = {10.1785/0119990069},
  url = {https://pubs.usgs.gov/publication/70022857},
  note = {Source identifier: 70022857}
}