حمودم, نبيلق, فدعما. Using Six-Sigma to measure the quality performance of the Department of Statistics-University of Baghdad-Case Study. JEAS [Internet]. 1Sep.2013 [cited 19Aug.2021];19(72):262. Available from: https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/956