TY  - RPRT
TI  - A closed-form solution to HZE propagation
AU  - Wilson, John W.
AU  - Townsend, L. W.
AU  - Lamkin, S. L.
AU  - Ganapol, B. D.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19900062003
ID  - 19900062003
ER  -