@misc{indiciae0ac5029a09aa,
  title = {Evidence for strong lateral seismic velocity variation in the lower crust and upper mantle beneath the California margin},
  author = {Voon Lai and Robert Graves and Shengji Wei and Don Helmberger},
  year = {2017},
  doi = {10.1016/j.epsl.2017.02.002},
  url = {https://pubs.usgs.gov/publication/70188545},
  note = {Source identifier: 70188545}
}