Belhaj, Fethi, and Ezzeddine ABAOUB. “A GARCH Examination of the Relationship Between Trading Volume and Conditional Volatility in the Tunisian Stock Market: Evidence for the Information Flow Paradigm”. International Journal of Economics and Financial Issues, vol. 5, no. 2, Apr. 2015, pp. 354-6, https://econjournals.com/index.php/ijefi/article/view/1098.