@misc{indiciaea7e7773b2c88,
  title = {Solar Modulation of Galactic Cosmic Rays},
  author = {Axford, W. I. and Gleeson, L. J.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690044213},
  note = {Source identifier: 19690044213}
}