Mohd Razali, N. H. ., L. Abdullah, A. T. . Ab Ghani, A. . Afthanorhan, and M. . Zabihinpour. “A Type-2 Fuzzy U-Control Chart Considering Probability-Based Average Run Length”. Contemporary Mathematics, vol. 5, no. 1, Mar. 2024, pp. 959-77, doi:10.37256/cm.5120242810.