@misc{indiciae4baca5d471d0,
  title = {Secular trends in storm-level geomagnetic activity},
  author = {J.J. Love},
  year = {2011},
  doi = {10.5194/angeo-29-251-2011},
  url = {https://pubs.usgs.gov/publication/70036012},
  note = {Source identifier: 70036012}
}