Delshad Shaker Ismael Botani, Mardin Samir Ali, and Sherzad Kareem Othman. “Using of Multivariate Hotelling T2 Quality Control Charts in Bazyan Cement Factory”. QALAAI ZANIST JOURNAL, vol. 7, no. 4, Dec. 2022, pp. 1036-50, doi:10.25212/lfu.qzj.7.4.41.