Al-Maiyaly, Bushra K.H. “The Effect of Thickness on Electrical Conductivity and Optical Constant of Fe2O3 Thin Films”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 27, no. 3, Apr. 2017, pp. 237-46, https://jih.uobaghdad.edu.iq/index.php/j/article/view/286.