IbrahimM. K., Tasi’uM., and DikkoH. G. “A STUDY ON THE VOLATILITY SPILLOVER BETWEEN NIGERIAN AND BRICS ECONOMIES USING MULTIVARIATE GARCH MODELS”. FUDMA JOURNAL OF SCIENCES, Vol. 8, no. 2, Apr. 2024, pp. 170 -79, doi:10.33003/fjs-2024-0802-2270.