Jabbar, Saja Mohsen. “Synthesis of CuO Nano Structure via Sol-Gel and Precipitation Chemical Methods”. Al-Khwarizmi Engineering Journal 12, no. 4 (December 18, 2017): 126–131. Accessed January 7, 2026. https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/327.