@misc{indiciae01ef5cbf69bc,
  title = {Directivity of M 3.1 earthquake near Anza, California and the effect on peak ground motion},
  author = {Jon Peter B. Fletcher and John Boatwright},
  year = {2019},
  doi = {10.1785/0120190141},
  url = {https://pubs.usgs.gov/publication/70236239},
  note = {Source identifier: 70236239}
}