Fitriyah, A. T., N. Chamidah, and T. Saifudin. “COMPARISON OF LEAST SQUARE SPLINE AND ARIMA MODELS FOR PREDICTING INDONESIA COMPOSITE INDEX”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 19, no. 3, July 2025, pp. 2169-78, doi:10.30598/barekengvol19iss3pp2169-2178.