Alemho, J.E., Deebom, Z.D. and Lekara-Bayo, I. (2026) “Forecasting Efficacy of Hybrid ARFIMA-FIGARCH Model: An Application to Returns and Volatility of the Nigerian All Share Index”, FUDMA Journal of Sciences, 10(13), pp. 220–226. doi:10.33003/fjs-2026-1013-5327.