Ustich, S. (2019). System of Essence Transboundary Processes: Qualitative and Quantitative Evaluation. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological Studies of Contemporary Society: Methodology, Theory, methods", (1101), 132-137. Retrieved from https://periodicals.karazin.ua/ssms/article/view/13637