Attia, Hassan Namis, and Saad Mahmood Al-Kawaz. 2021. “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 (53, 1):532-60. https://doi.org/10.25130/tjaes.17.53.1.31.