SIREGAR, I.; NUGRAHA, A.; NOTODIPUTRO, K.; ANGRAINI, Y.; MUALIFAH, L. THE COMPARISON OF LONG SHORT-TERM MEMORY AND BIDIRECTIONAL LONG SHORT-TERM MEMORY FOR FORECASTING COAL PRICE. BAREKENG: Jurnal Ilmu Matematika dan Terapan, v. 19, n. 1, p. 245-258, 13 jan. 2025.