Sugiyanto, Sugiyanto, Sri Subanti, Isnandar Slamet, Etik Zukhronah, Irwan Susanto, Winita Sulandari, and Nabila Churin Aprilia. “ombined odel of arkov witching and symmetry of eneralized easonal utoregressive oving verage onditional eteroscedasticity for arly etection of inancial risis in ong ong”. (IJCSAM) International Journal of Computing Science and Applied Mathematics 10, no. 2 (August 15, 2024): 47–50. ccessed December 6, 2025. https://journal.its.ac.id/index.php/ijcsam/article/view/4541.