@misc{indiciae93088872ea20,
  title = {Gravitational body forces focus North American intraplate earthquakes},
  author = {William Brower Levandowski and Mark Zellman and Richard W. Briggs},
  year = {2017},
  doi = {10.1038/ncomms14314},
  url = {https://pubs.usgs.gov/publication/70188377},
  note = {Source identifier: 70188377}
}