@misc{indiciae1d4b4ac25736,
  title = {Quiet geomagnetic field representation for all days and latitudes},
  author = {W.H. Campbell and E.R. Schiffmacher and B.R. Arora},
  year = {1992},
  doi = {10.5636/jgg.44.459},
  url = {https://pubs.usgs.gov/publication/70016860},
  note = {Source identifier: 70016860}
}