SJUSKO, I.; USTIČ, I. Ukraine and Oil. Czech Journal of International Relations, Prague, Czech Republic, v. 34, n. 4, p. 45–58, 1999. DOI: 10.32422/cjir.1435. Disponível em: https://ojs3.iir.cz/index.php/cjir/article/view/1435. Acesso em: 21 nov. 2024.