Stojadinović, Stevan, and Rastko Vasilić. “Spectroscopic Study of Micro-Discharges During Plasma Electrolytic Oxidation of Al–Zn–Si Alloy”. Journal of the Serbian Chemical Society 84, no. 8 (August 29, 2019): 915–923. Accessed April 25, 2024. https://shd-pub.org.rs/index.php/JSCS/article/view/8093.