Mohamed, N. B. E., Elobaid, R. A., Elamin, A. A., & Elfaki, A. A. A. (2019). The Effect of Gama Ray on Optical Properties for Zincoxide (Zno) Thin Film. RA Journal Of Applied Research, 5(10), 2573–2578. https://doi.org/10.33826/rajar/v5i10.07