O. Dwipurwani, F. Puspita, S. S. Supadi, E. Yuliza, and D. Qatrunnada, “HOLT-WINTER METHOD FOR FORECASTING LIQUID ALUMINIUM SULFATE USAGE FOR PROBABILISTIC INVENTORY MODELING Q WITH ERLANG DISTRIBUTION”, BAREKENG: J. Math. & App., vol. 19, no. 1, pp. 453-464, Jan. 2025.