European currency system: problems and developments of prospective evaluation. Economics and region, [S. l.], n. 1(72), p. 49–55, 2019. DOI: 10.26906/eip.2019.1(72).1437. Disponível em: https://ojs35.nupp.edu.ua/eir/article/view/1437. Acesso em: 23 dec. 2025.