@misc{indiciaeac6442729d3f,
  title = {Identifying high-seismicity regions of the world for earthquake-prediction studies},
  author = {William Hung Kan Lee and Stephen Travis Houck},
  year = {1977},
  doi = {10.3133/ofr77693},
  url = {https://pubs.usgs.gov/publication/ofr77693},
  note = {Source identifier: ofr77693}
}