@misc{indiciaef2ee42014014,
  title = {State of stress and intraplate earthquakes in the United States},
  author = {Mark D. Zoback and Mary Lou Zoback},
  year = {1981},
  doi = {10.1126/science.213.4503.96},
  url = {https://pubs.usgs.gov/publication/70011970},
  note = {Source identifier: 70011970}
}