احمد ايمان حسن, and عبد الوهاب عمر عادل. “Comparison Some Parametric and Non –parametric Methods To Estimate Median Effective Dose ( ED5”. Journal of Economics and Administrative Sciences 19, no. 73 (October 1, 2013): 453. Accessed January 11, 2025. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/995.