Risin, I. E. and Treschevskiy, Y. I. (2003) “Management of changes and contradictions in social-economical systems”, Proceedings of Voronezh State University. Series: Economics and Management, 0(1), pp. 76-82. Available at: https://journals.vsu.ru/econ/article/view/10670 (Accessed: 1March2024).