@misc{indiciae63b3b62e2bac,
  title = {Map showing global distribution of moment-tensor focal mechanisms, 1981-1985, prepared by National Earthquake Information Center, World Data Center A for Seismology},
  author = {S.K. Goter},
  year = {1988},
  doi = {10.3133/gp991},
  url = {https://pubs.usgs.gov/publication/gp991},
  note = {Source identifier: gp991}
}