“Novel Co-Precipitation Method for Synthesis of Nanostructured Nickel Oxide in Accordance to PH: Structural and Optical Properties As an Active Optical Filter”. Ibn AL-Haitham Journal For Pure and Applied Sciences 32, no. 1 (January 20, 2019): 1–6. Accessed May 1, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1974.