Virginia, Erica, et al. “Application of GARCH Model to Forecast Data and Volatility of Share Price of Energy (Study on Adaro Energy Tbk, LQ45)”. International Journal of Energy Economics and Policy, vol. 8, no. 3, May 2018, pp. 131-40, https://econjournals.com./index.php/ijeep/article/view/6352.