@misc{indiciae4cda4f1e9178,
  title = {On the development of strong-motion instrument networks in the United States},
  author = {R.B. Matthiesen},
  year = {1978},
  doi = {10.3133/ofr781024},
  url = {https://pubs.usgs.gov/publication/ofr781024},
  note = {Source identifier: ofr781024}
}