Naseem, S., G. lei fu, M. Mohsin, M. Zia-ur-Rehman, and S. Baig. “Volatility of Pakistan Stock Market: A Comparison of Garch Type Models With Five Distribution”. Amazonia Investiga, Vol. 7, no. 17, Dec. 2018, pp. 486-04, https://www.amazoniainvestiga.info/index.php/amazonia/article/view/763.