@misc{indiciae9ab7d30dca28,
  title = {Cosmic ray biannual variation},
  author = {Attolini, M. R. and Cecchini, S. and Cinicastagnoli, G. and Galli, M.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850026698},
  note = {Source identifier: 19850026698}
}