"Method to estimate the correlation coefficients in the distribution of the True multivariate " (2009) Al Kut Journal of Economics and Administrative Sciences, 1(1), ص 89–106. موجود في: https://kjeas.uowasit.edu.iq/index.php/kjeas/article/view/6 (تاريخ الوصول: 31 أغسطس 2026).