@misc{indiciae00505aa8d270,
  title = {Preliminary observations of noise spectra at the SRO and ASRO stations},
  author = {Jon Peterson},
  year = {1980},
  doi = {10.3133/ofr80992},
  url = {https://pubs.usgs.gov/publication/ofr80992},
  note = {Source identifier: ofr80992}
}