@misc{indiciae3ff4a1cacc54,
  title = {Seismic velocities from borehole measurements at four locations along a fifty-kilometer section of the San Andreas fault near Parkfield, California},
  author = {J. F. Gibbs and E. F. Roth and T. E. Fumal and N.A. Jasek and M.A. Emslie},
  year = {1990},
  doi = {10.3133/ofr90248},
  url = {https://pubs.usgs.gov/publication/ofr90248},
  note = {Source identifier: ofr90248}
}