@misc{indiciae221e61f0f5e5,
  title = {Linear prediction filters for linear and nonlinear modeled geomagnetic activity},
  author = {Klimas, A. J. and Baker, D. N. and Roberts, D. A.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910063754},
  note = {Source identifier: 19910063754}
}