@misc{indiciaeb1caccdb5677,
  title = {Preliminary isostatic residual gravity map of California},
  author = {C. W. Roberts and R.C. Jachens and H. W. Oliver},
  year = {1981},
  doi = {10.3133/ofr81573},
  url = {https://pubs.usgs.gov/publication/ofr81573},
  note = {Source identifier: ofr81573}
}