Farhan, Mohammed Noori. “Estimation of the Production Function of the Diyala State Company for the Period 2002-2021”. Tikrit Journal of Administrative and Economic Sciences 18, no. 60, 3 (December 31, 2022): 806–818. Accessed April 4, 2026. https://tjaes.org/ojs/index.php/tjaes/article/view/1348.