Napitupulu, Herlina, Rizki Apriva Hidayana, and Jumadil Saputra. “Determination of VaR on BBRI Stocks and BMRI Stocks Using the ARIMA-GARCH Model”. Operations Research: International Conference Series 2, no. 3 (September 5, 2021): 71–74. Accessed January 27, 2026. https://mail.iorajournal.org/index.php/Orics/article/view/178.