ANDRIEVSKY, Timur. The purposes of the Russian-Ukrainian hybrid war. De Securitate et Defensione. O Bezpieczeństwie i Obronności, [S. l.], v. 3, n. 2, p. 189–198, 2017. Disponível em: https://czasopisma.uph.edu.pl/desecuritate/article/view/233. Acesso em: 16 cze. 2024.