@misc{indiciae39bdae643ead,
  title = {Data from the GEOS digital recorder},
  author = {J. B. Fletcher and Roger D. Borcherdt and C. Mueller and E. Cranswick},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/70234363},
  note = {Source identifier: 70234363}
}