Ihsan, H.H. and Farhan, S.H. 2021. Measuring and analyzing oil price fluctuations and their reflections on the rates of trade in the Republic of South Korea for the period (1990-2018). Tikrit Journal of Administrative and Economic Sciences. 17, 56, 2 (Dec. 2021), 561–572. DOI:https://doi.org/10.25130/tjaes.17.56.2.33.