Suganya Phantu, Yupaporn Areepong, and Saowanit Sukparungsee. “Average Run Length Formulas for Mixed Double Moving Average - Exponentially Weighted Moving Average Control Chart”. Science & Technology Asia 28, no. 1 (March 21, 2023): 77–89. accessed September 10, 2026. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/248877.