@misc{indiciae200ac1688adc,
  title = {Non-shear focal mechanisms of earthquakes at The Geysers, California and Hengill, Iceland, geothermal areas},
  author = {B.R. Julian and A.D. Miller and G.R. Foulger},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70017888},
  note = {Source identifier: 70017888}
}