Kartsonakis Mademlis, Dimitrios, and Nikolaos Dritsakis. “Volatility Forecasting Using Hybrid GARCH Neural Network Models: The Case of the Italian Stock Market”. International Journal of Economics and Financial Issues, vol. 11, no. 1, Jan. 2021, pp. 49-60, https://econjournals.com./index.php/ijefi/article/view/10842.