Moroke, Ntebogang Dinah. “An Optimal Generalized Autoregressive Conditional Heteroscedasticity Model for Forecasting the South African Inflation Volatility”. Journal of Economics and Behavioral Studies, vol. 7, no. 4(J), Aug. 2015, pp. 134-49, https://doi.org/10.22610/jebs.v7i4(J).600.