الدوري محمد صادق, and حمزة رحاب كاظم. 2019. “Comparison of Estimations Methods of the Entropy Function to the Random Coefficients for Two Models: The General Regression and Swamy of the Panel Data”. Journal of Economics and Administrative Sciences 25 (110): 371. https://doi.org/10.33095/jeas.v25i110.1594.