@misc{indiciaed4417abcd58f,
  title = {Summary of microearthquakes along the San Andreas fault system in central California, April to June 30, 1968},
  author = {John C. Roller and Jerry P. Eaton and William Hung Kan Lee},
  year = {1969},
  doi = {10.3133/ofr69230},
  url = {https://pubs.usgs.gov/publication/ofr69230},
  note = {Source identifier: ofr69230}
}