BORZENKO, E.A. Sovereign ratings of Ukraine: factors and risks. BUKETOV BUSINESS REVIEW, [S. l.], v. 98, n. 2, p. 25–31, 2020. DOI: 10.31489/2020ec2/25-31. Disponível em: https://bbr.buketov.edu.kz/economy-vestnik/article/view/220. Acesso em: 7 dec. 2025.