1. Calculations of the Penetration of Gamma Rays;Goldstein,1954
2. Photon Cross Sections, Attenuation Coefficients from 10 keV to 100 GeV;Hubbell,1969
3. Point Isotropic Gamma-Ray Buildup Factors in Concrete
4. Photon Point Source Buildup Factors for Air, Water, and Iron
5. PALLAS-PL, SP-Br: A Code for Direct Integration of Transport Equation in One-Dimensional Plane and Spherical Geometries;Takeuchi,1981