Tsai, Chen-Fang, Shin-Li Lu, and Chi-Jui Huang. “DESIGN OF AN EXTENDED NONPARAMETRIC EWMA SIGN CHART”. International Journal of Industrial Engineering: Theory, Applications and Practice 22, no. 6 (January 14, 2016). Accessed May 18, 2024. https://journals.sfu.ca/ijietap/index.php/ijie/article/view/1172.