PARAKHONSKIY, Boris. UKRAINE IN THE GUAM SYSTEM. CENTRAL ASIA AND THE CAUCASUS, Delhi, India, v. 9, n. 3-4, p. 107–118, 2008. Disponível em: http://13.200.237.241/CAC/index.php/cac/article/view/1136.. Acesso em: 11 jan. 2025.