@misc{indiciaef7ef97dc2306,
  title = {Report of geomagnetic pulsation indices for space weather applications},
  author = {Z. Xu and Jennifer L. Gannon and Erin J. Rigler},
  year = {2013},
  doi = {10.3133/ofr20131166},
  url = {https://pubs.usgs.gov/publication/ofr20131166},
  note = {Source identifier: ofr20131166}
}