“MODELLING THE VOLATILITY OF COTTON AND RUBBER STOCK RETURNS IN NIGERIA USING GARCH TYPE MODELS”. FUDMA JOURNAL OF SCIENCES 9, no. 5 (May 31, 2025): 67–79. Accessed September 5, 2025. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/3650.