Ponziani RM. The Modeling the returns volatility of Indonesian stock indices: The case of SRI-KEHATI and LQ45. JEM [Internet]. 2022 Mar. 31 [cited 2026 Oct. 18];18(1):13-21. Available from: https://ejournalstaging.unikama.ac.id/index.php/JEKO/article/view/6411