ALDAWIYAH, Najwa Khoir; WULANDARI, Indana Zulfa; FIRMANDA, Ahmad Wahyu; MARDIANTO, M. Fariz Fadillah. Value-at-Risk Analysis of PT Bukit Asam Tbk (PTBA) Stock Returns Based on an ARIMA–GARCH Model with a Student-t Distribution. Jurnal Matematika, Statistika dan Komputasi, [S. l.], v. 22, n. 3, p. 546–559, 2026. DOI: 10.20956/j.v22i3.49505. Disponível em: https://journal.unhas.ac.id/index.php/jmsk/article/view/49505. Acesso em: 16 may. 2026.