عبودي عماد حازم, and يوسف علي حميد. “Comparison Between Some of the Robust Penalized Estimators Using Simulation”. Journal of Economics and Administrative Sciences 23, no. 100 (November 1, 2017): 490. Accessed May 11, 2025. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/228.