@misc{indiciaeb21307d1e83c,
  title = {Solar particles /observations, relationship to the sun acceleration, interplanetary medium/},
  author = {Mcdonald, F. B. and Fichtel, C. E. and Fisk, L. A.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740061831},
  note = {Source identifier: 19740061831}
}