@misc{indiciaed0fe10bb4580,
  title = {Solar modulation of galactic cosmic rays.},
  author = {Balasubrahmanyan, V. K. and Boldt, E. and Palmeira, R. A. R.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670041184},
  note = {Source identifier: 19670041184}
}