Eisa, M. E. M., M. D. M. Ali, and M. . J. Abuualreish. “Study of Gamma-Ray Shielding of Two Different Heavy Metals and Their Combination for Cs-137 and Co-60 Sources”. Engineering, Technology & Applied Science Research, vol. 13, no. 1, Feb. 2023, pp. 10033-8, doi:10.48084/etasr.5513.