فهرس المقالات Oluwagbenga Babatunde المقاله 1 - Comparative Forecasting Performance of GARCH and GAS Models in the Stock Price Traded on Nigerian Stock Exchange 20.1001.1.22286225.2021.11.2.2.1 10.30495/ijm2c.2021.684813 Oluwagbenga Babatunde Serifat Folorunso Francisco Saliu International Journal of Mathematical Modeling & Computations , العدد 2 , السنة 11 , بهار 2021