@misc{indiciaea4ec3b4ac8cb,
  title = {Tests of the standard (30 hz) NCER FM multiplex telemetry system, augmented by two timing channels and a compensation reference signal, used to record multiplexed seismic network data on magnetic tape},
  author = {Jerry P. Eaton},
  year = {1976},
  doi = {10.3133/ofr76374},
  url = {https://pubs.usgs.gov/publication/ofr76374},
  note = {Source identifier: ofr76374}
}