Usman, M., Wardhana, M. Y., & Istiqamah, M. (2022). Analysis of the Risk of Rubber Prices Using the ARCH-GARCH and VaR Methods on Farm Income in West Aceh District. International Journal on Advanced Science, Engineering and Information Technology, 12(3), 1018–1022. https://doi.org/10.18517/ijaseit.12.3.13637