H. W. You, Z. . Chong, W. L. . Teoh, M. . Khoo, and W. . Yeong, “An Expected Average Run Length (EARL) Performance Comparison of the SSGR and EWMA Control Charts”, IJIE, vol. 15, no. 5, pp. 35–40, Oct. 2023, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/14197