@misc{indiciae32c68b679ac9,
  title = {The 22-year solar cycle - A heliospheric oscillation},
  author = {Gurnett, D. A. and Dangelo, N.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820046485},
  note = {Source identifier: 19820046485}
}