Nurhayati, N., W. Apriani, and A. Bustan. “Value at Risk Prediction for the GJR-GARCH Aggregation Model”. Pattimura International Journal of Mathematics (PIJMath), Vol. 1, no. 1, May 2022, pp. 01-06, doi:10.30598/pijmathvol1iss1pp01-06.