1. Implementation of Gy-Eq for Deterministic Effects Limitation in Shield Design
2. Wilson, J. W., Badavi, F. F., Cucinotta, F. A., Shinn, J. L., Badhwar, G. D., Silberberg, R., Tsao, C. H., Townsend, L. W., and Tripathi, R. K. "HZETRN: Description of a Free-SpaceIon and Nucleon Transport and Shielding Computer Program," NASA TP-3495,1995.