Teoh JW, Teoh WL, Chong ZL, Chew X, Teh SY. Redesigning the Omnibus SPRT Control Chart for Simultaneous Monitoring of the Mean and Dispersion of Weibull Processes. IJIE. 2024;16(5):201-213. Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/16177