@misc{indiciae3993daa6860c,
  title = {Diffusive shock acceleration - Acceleration rate, magnetic-field direction and the diffusion limit},
  author = {Jokipii, J. R.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930055994},
  note = {Source identifier: 19930055994}
}