Sulisti, Nanda, and Agung Nusantara. “Analysis of Volatility and Stock Risk in Energy Sector Companies Using The ARCH/GARCH Method”. Economics and Business International Conference Proceeding 1, no. 2 (July 27, 2024): 1199–1207. Accessed January 9, 2025. http://103.97.100.158/index.php/EBiC/article/view/531.