@misc{indiciae7c316da63c7b,
  title = {Time-causal decomposition of geomagnetic time series into secular variation, solar quiet, and disturbance signals},
  author = {E. Joshua Rigler},
  year = {2017},
  doi = {10.3133/ofr20171037},
  url = {https://pubs.usgs.gov/publication/ofr20171037},
  note = {Source identifier: ofr20171037}
}