Yusuf, G. T. ., H. O. . Efunwole, M. A. . Raimi, O. E. . Alaje, and A. K. . Kazeem. “Effect of Al and Mg Doping on Optical Properties of ZnO Thin Films Prepared by Spin Coating”. Journal of Nuclear Physics, Material Sciences, Radiation and Applications, vol. 2, no. 1, Aug. 2014, pp. 73-81, doi:10.15415/jnp.2014.21005.