Tuammee, Sopida. “Forecasting the Demand of Surgical Mask to Raw Material Purchasing Planning”. Journal of Bansomdej Engineering and Industrial Technology 5, no. 1 (June 30, 2024): 33–46. accessed April 21, 2025. https://ph04.tci-thaijo.org/index.php/JEITB/article/view/5386.