Ankhelko, Iryna, and Iryna Lekh. “Current State and Trends of Openness of the Ukrainian Economy”. Journal of Vasyl Stefanyk Precarpathian National University 8, no. 3 (November 4, 2021): 68–75. Accessed April 25, 2024. https://scijournals.pnu.edu.ua/index.php/jpnu/article/view/5446.