Riswandi, Fira, Dian Firmayasari S, and Suriani M. “Penerapan Model Rantai Markov Untuk Memprediksi Probabilitas Return Saham Indosat (ISAT)”. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika 9, no. 1 (February 4, 2026): 96–103. Accessed February 9, 2026. https://e-journal.my.id/proximal/article/view/7961.