@misc{indiciaee87739c7a24d,
  title = {A closed form solution to HZE propagation},
  author = {Wilson, John W. and Townsend, L. W. and Lamkin, S. L. and Ganapol, B. D.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900017324},
  note = {Source identifier: 19900017324}
}