@misc{indiciaedb57443343ca,
  title = {Statistical modeling of storm level Kp occurrences: Solar cycle modulation},
  author = {Jeffrey J. Love and K.J. Remick and David M. Perkins},
  year = {2007},
  doi = {10.1029/2006sw000287},
  url = {https://pubs.usgs.gov/publication/70200680},
  note = {Source identifier: 70200680}
}