Agustina, S., Indrasti, N. S., Suprihatin, ., & Rohman, N. T. (2015). Synthesis of Nano Zinc Oxide from Galvanized Industrial Waste by Using a Combination Method of SOL-Gel, Sonochemical and Calcination. International Journal of Sciences: Basic and Applied Research (IJSBAR), 22(1), 151-164. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3878