Amer Rajab, Musaab, and Mohammed Sadeq Abdul.Razaq. “Using Some Estimation Methods for Mixed-Random Panel Data Regression Models With Serially Correlated Errors With Application”. Journal of Economics and Administrative Sciences 28, no. 134 (December 31, 2022): 96–109. Accessed March 31, 2025. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/2423.