@misc{indiciae8d3ffd3f246f,
  title = {A new event detector designed for the Seismic Research Observatories},
  author = {James N. Murdock and Charles R. Hutt},
  year = {1983},
  doi = {10.3133/ofr83785},
  url = {https://pubs.usgs.gov/publication/ofr83785},
  note = {Source identifier: ofr83785}
}