Agustina, S., Indrasti, N.S., Suprihatin, . and 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 (Apr. 2015), 151–164.