Irandi, D. F., A. A. Rohmawati, and P. H. Gunawan. “Forecasting Number of New Cases Daily COVID-19 in Central Java Province Using Exponential Smoothing Holt-Winters”. Indonesia Journal on Computing (Indo-JC), Vol. 6, no. 2, Sept. 2021, pp. 23-32, doi:10.34818/INDOJC.2021.6.2.565.