Ponziani, Regi Muzio. “The Modeling the Returns Volatility of Indonesian Stock Indices: The Case of SRI-KEHATI and LQ45”. Jurnal Ekonomi Modernisasi 18, no. 1 (March 31, 2022): 13–21. Accessed November 23, 2024. http://ejournal.unikama.ac.id/index.php/JEKO/article/view/6411.