1. XCOM: Photon cross section on personal computer for the partial and total photon interaction processes;Berger;NBSIR,1987
2. The effective atomic numbers of materials for various gamma rays;Hine;Phys. Rev.,1952
3. Krocher, J. F. and Bowman, R. E. (1984) Effects of radiation on materials and components. Reinhold, N.Y
4. Gamma ray attenuation coefficients in some heavy metal oxide borate glasses at 662keV;Khanna;Nucl. Instr. Meth. Phys. Res.,1996
5. Rothwell, W. S. (1958) Radiation shielding window glasses. Bull. PE-50 (N.Y)