@misc{indiciae49830ac8db47,
  title = {Earthquake maps for developing areas in the San Francisco Bay area},
  author = {Jeanne B. Perkins and Donald A. Olmstead},
  year = {1981},
  doi = {10.3133/ofr81939},
  url = {https://pubs.usgs.gov/publication/ofr81939},
  note = {Source identifier: ofr81939}
}