@misc{indiciae67ce93176c8f,
  title = {Preliminary catalog of earthquakes in central California for April 1979},
  author = {L.M. Riley and F.W. Lester},
  year = {1981},
  doi = {10.3133/ofr81519},
  url = {https://pubs.usgs.gov/publication/ofr81519},
  note = {Source identifier: ofr81519}
}