@misc{indiciaeda47be48e3e7,
  title = {Calibration of a linear spring-supported, vertical-component moving-coil seismometer by means of damping test and/or a current release test},
  author = {Jerry P. Eaton},
  year = {1992},
  doi = {10.3133/ofr91635},
  url = {https://pubs.usgs.gov/publication/ofr91635},
  note = {Source identifier: ofr91635}
}