Economics and System Theory: Interdisciplinary Connections. Economic journal of Lesya Ukrainka Volyn National University, [S. l.], v. 4, n. 16, p. 22–27, 2018. DOI: 10.29038/2411-4014-2018-04-22-27. Disponível em: https://echas.vnu.edu.ua/index.php/echas/article/view/389.. Acesso em: 3 may. 2024.