@misc{indiciaed869a1877b18,
  title = {Report of the review of the Global Seismograph Network Program of the U.S. Geological Survey},
  author = {J.R. Filson and Kaye Shedlock},
  year = {2001},
  doi = {10.3133/ofr01460},
  url = {https://pubs.usgs.gov/publication/ofr01460},
  note = {Source identifier: ofr01460}
}