Alo, Sarhan Ajaj, and Ashraf H. Faris. “Asymmetric Cost Behavior Analysis: Evidence from Iraqi Industrial Firms”. Tikrit Journal of Administrative and Economic Sciences 18, no. 57, 1 (March 31, 2022): 107–123. Accessed October 23, 2026. https://www.tjaes.org/index.php/tjaes/article/view/131.