@misc{indiciaea1a102b087e5,
  title = {Interplanetary proton fluence model - JPL 1991},
  author = {Feynman, J. and Spitale, G. and Wang, J. and Gabriel, S.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930071537},
  note = {Source identifier: 19930071537}
}