عبدالله مصطفى مثينة. “‘The Two Methods of Additive Holt Winters and Fuzzy Logic in Predicting the Time Series’”. IRAQI JOURNAL OF STATISTICAL SCIENCES 9, no. 1 (June 1, 2009): 237–256. Accessed October 24, 2025. https://stats.uomosul.edu.iq/index.php/stats/article/view/29164.