W. Dassanayake, I. Ardekani, C. Jayawardena, H. Sharifzadeh, and N. Gamage, “Forecasting Accuracy of Holt-Winters Exponential Smoothing: Evidence From New Zealand”, New Zealand J. Appl. Bus. Res., vol. 17, no. 1, pp. 11–30, Aug. 2019.