@misc{indiciae795ef1dfeb7d,
  title = {The Loma Prieta, California, Earthquake of October 17, 1989: Earthquake occurrence},
  author = {William H. Coordinated by Bakun and William H. Prescott},
  year = {1993},
  doi = {10.3133/pp1550},
  url = {https://pubs.usgs.gov/publication/pp1550},
  note = {Source identifier: pp1550}
}