@misc{indiciae2b624f600d5a,
  title = {Change in the eleven-year modulation at the time of the June 8, 1969, Forbush decrease.},
  author = {Lockwood, J. A. and Lezniak, J. A. and Webber, W. R.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720058758},
  note = {Source identifier: 19720058758}
}