1. Hirayama H. Private communication.
2. Photon Cross Sections, Attenuation Coefficients from 10 keV to 100 GeV;Hubbell;NSRDS-NBS-29,1969
3. G33: A General Purpose Gamma-Ray Scattering Program;Malenfant;LA-5176,1973
4. Modifications of the Point-Kernel Code QAD-P5A: Conversion to the IBM-360 Computer and Incorporation of Additional Geometry Routines;Solomito;ORNL-4181,1968
5. Standard reference Data for Gamma-Ray Transport in Homogeneous Media;Trubey,1983