Saffa AL-Saffawi, D., and M. Al Dulaimi. “ِِِA Comparison Between Adaptive Filtering and HoIlt-Winters Multiplicative in Seasonal Time Series Values Forecasting”. TANMIYAT AL-RAFIDAIN, vol. 32, no. 99, July 2010, pp. 55-67, doi:10.33899/tanra.2010.161874.