A. Najam, Laith, Aya M.A. Ismail, and Mahmood A. Hmood. 2025. “Study of the Efficiency of Some Quaternary Alloys (Al-Cu-Pb-Zn) in Attenuating Gamma Radiation”. Rafidain Journal of Science 34 (4):102-9. https://doi.org/10.33899/rsci.v34i4.56056.