Saber AL-MOUEL, Abdul-Hussein, and Nadia Abud Habeeb AL-MOUSAWAY. 2017. “Study of MINQUE and Simple Estimator of Covariance Matrix in the Multivariate Linear Model”. Journal of Al-Qadisiyah for Computer Science and Mathematics 1 (1):230-40. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/189.