@misc{indiciae9d497206192b,
  title = {Studies for seismic zonation of the San Francisco Bay region},
  author = {Roger D. Borcherdt},
  year = {1975},
  doi = {10.3133/pp941a},
  url = {https://pubs.usgs.gov/publication/pp941A},
  note = {Source identifier: pp941A}
}