ARE SO, ONYEKA-UBAKA JN. A HYBRID APPROACH TO FORECASTING STOCK INDICES USING THE ARMA–GARCH AND ARMA–EGARCH MODELS: EVIDENCE FROM THE NIGERIAN STOCK EXCHANGE. LAGJMA [Internet]. 2026Apr.16 [cited 2026May10];6(2):88 - 107. Available from: https://lagjma.unilag.edu.ng/article/view/3041