@misc{indiciae1225dd143727,
  title = {World-Wide Standardized Seismograph Network: a data users guide},
  author = {Jon R. Peterson and Charles R. Hutt},
  year = {2014},
  doi = {10.3133/ofr20141218},
  url = {https://pubs.usgs.gov/publication/ofr20141218},
  note = {Source identifier: ofr20141218}
}