Faris, Rawaa A. “Synthesis, Characterization, and Optical Properties of Copper Oxide Thin Films Obtained by Spray Pyrolysis Deposition”. Iraqi Journal of Physics 11, no. 22 (February 20, 2019): 64–71. Accessed March 13, 2025. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/354.