L. Fitriana and I. J. Mukminan, “OPTIMIZING FLOOD EARLY WARNING SYSTEMS: THE ROBUSTNESS OF THE ADDITIVE HOLT-WINTERS MODEL IN FORECASTING SEASONAL RIVER STAGES”, Jur. Ilmh. Ilm. Ter. Un. Ja, vol. 10, no. 1, pp. 238–254, Feb. 2026.