HARIS, M. A.; SARI, W.; FAUZI, F.; SAM’AN, M. FORECASTING NICKEL PRICES WITH THE AUTOMATIC CLUSTERING FUZZY TIME SERIES MARKOV APPROACH. BAREKENG: Jurnal Ilmu Matematika dan Terapan, v. 19, n. 2, p. 1237-1250, 1 abr. 2025.