TURKYILMAZ, Serpil, and Mesut BALIBEY. “Long Memory Behavior in the Returns of Pakistan Stock Market: ARFIMA-FIGARCH Models”. International Journal of Economics and Financial Issues, vol. 4, no. 2, Mar. 2014, pp. 400-1, https://econjournals.net.tr/index.php/ijefi/article/view/784.