Attia, Hassan Namis, and Saad Mahmood Al-Kawaz. “Economic Measurement of the Impact of the Knowledge Economy on International Trade Exchange in Selected Countries for the Period (1995-2019)”. Tikrit Journal of Administrative and Economic Sciences 17, no. 53, 1 (March 31, 2021): 532–560. Accessed March 6, 2026. https://www.tjaes.org/ojs/index.php/tjaes/article/view/1712.