@misc{indiciae784752d6f9a3,
  title = {Interplanetary Proton Model: JPL 1991},
  author = {Feynman, J. and Spitale, G. and Wang, J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20060039008},
  note = {Source identifier: 20060039008}
}