NAMONIUK , Cheslava. TRANSFORMATION OF POLISH-UKRAINIAN BORDER POLICY DURING THE WAR: FROM OPEN GATES TO SELECTIVE SOLIDARITY. Current Problems of Sustainable Development, [S. l.], v. 2, n. 2, p. 286–291, 2025. DOI: 10.60022/2(2)-32S. Disponível em: https://journals.csr.com.ua/index.php/sustainability/article/view/79. Acesso em: 26 jul. 2026.