Mahmood, Sara S. “Characterization of (SnO2)1-x(TiO2:CuO)x Films As NH3 Gas Sensor”. Iraqi Journal of Physics 16, no. 39 (January 5, 2019): 71–80. Accessed March 29, 2025. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/105.