@misc{indiciae8c1ae7681f1e,
  title = {Why the New Madrid earthquakes are M 7–8 and the Charleston earthquake is ∼M 7},
  author = {Chris H. Cramer and Oliver S. Boyd},
  year = {2014},
  doi = {10.1785/0120120257},
  url = {https://pubs.usgs.gov/publication/70155213},
  note = {Source identifier: 70155213}
}