Haris, M. Al, Wulan Sari, Fatkhurokhman Fauzi, and Muhammad Sam’an. 2025. “FORECASTING NICKEL PRICES WITH THE AUTOMATIC CLUSTERING FUZZY TIME SERIES MARKOV APPROACH”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan 19 (2), 1237-50. https://doi.org/10.30598/barekengvol19iss2pp1237-1250.