Mahmudah, U. 2024. A GARCH Model for Forecasting Volatility of Oil and Gas Exports in Indonesia. JURNAL ILMIAH MATEMATIKA DAN TERAPAN. 21, 2 (Dec. 2024), 131 - 143. DOI:https://doi.org/10.22487/2540766X.2024.v21.i2.16836.