“Construction of Control Charts Using Probabilistic and Membership Approaches for Linguistic Data”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 39, no. 1 (October 10, 2021): 217–237. Accessed August 30, 2026. https://jrucs.iq/index.php/JAUCS/article/view/212.