Peramalan Harga Emas Antam Menggunakan Metode Generalized Autoregressive Conditional Heterokedasticity (GARCH) - Amri, Ihsan; Astuti, Sofi; Sulistiya, Indah; Suherdi, Andri; Haris, M.Al (UJMC (Unisda Journal of Mathematics and Computer Science), 2024)