@misc{indiciaeae24af05f520,
  title = {Propagation of a large Forbush decrease in cosmic-ray intensity past the earth, Pioneer 11 at 34 AU and Pioneer 10 at 53 AU},
  author = {Van Allen, James A. and Fillius, R. W.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920068528},
  note = {Source identifier: 19920068528}
}