@misc{indiciae5f6d6d3d40d7,
  title = {The Global Digital Seismograph Network-Day Tape},
  author = {John P. Hoffman},
  year = {1980},
  doi = {10.3133/ofr80289},
  url = {https://pubs.usgs.gov/publication/ofr80289},
  note = {Source identifier: ofr80289}
}