Achmadin, Wahyu Nur, et al. “PENENTUAN NILAI TERKECIL ROOT MEAN SQUARED ERROR (RMSE) METODE HOLT-WINTERS EXPONENTIAL SMOOTHING PADA EKSPOR KOPI TUJUAN JERMAN”. MathVision : Jurnal Matematika, vol. 6, no. 1, Mar. 2024, pp. 37-42, doi:10.55719/mv.v6i1.1102.