"Estimate survival functions for the distribution and weibull Gompertz distribution and the distribution of Burr-x greatest way possible and use it to build a life of self-tables" (2014) Al Kut Journal of Economics and Administrative Sciences, 6(13), ص 203–234. موجود في: https://kjeas.uowasit.edu.iq/index.php/kjeas/article/view/160 (تاريخ الوصول: 31 أغسطس 2026).