Ali, Taha Hussein, Alan Ghafur Rahim, and Dlshad Mahmood Saleh. “Construction of Bivariate F-Control Chart With Application”. EURASIAN JOURNAL OF SCIENCE AND ENGINEERING 4, no. 2 (December 1, 2018): 116–133. Accessed April 27, 2026. https://eajse.tiu.edu.iq/index.php/eajse/article/view/295.