Lee, Ming Ha. “VARIABLE SAMPLE SIZE AND SAMPLING INTERVALS WITH FIXED TIMES HOTELLING’S T^2 CHART”. International Journal of Industrial Engineering: Theory, Applications and Practice 20, no. 3-4 (August 20, 2013). Accessed November 25, 2024. https://ijietap.journals.publicknowledgeproject.org/index.php/ijie/article/view/349.