Katabba, Yunus Iman, and Kezia Estefani. “Penerapan Model Self-Exciting Threshold Autoregressive (SETAR) Nonlinear Dalam Memodelkan Data Harga Minyak Sawit (FCPOc1)”. Mathematical Sciences and Applications Journal 4, no. 1 (October 31, 2023): 33-39. Accessed August 25, 2024. https://online-journal.unja.ac.id/msa/article/view/28292.