Razmi, Seyedeh Fatemeh, et al. “The Effects of External Uncertainties Against Monetary Policy Uncertainty on IRANIAN Stock Return Volatility Using GARCH-MIDAS Approach”. International Journal of Energy Economics and Policy, vol. 10, no. 4, May 2020, pp. 278-81, https://econjournals.com./index.php/ijeep/article/view/9176.