HOLUBNYCHA, Liudmyla; SHCHOKINA, Tetiana; BESARAB, Tetiana; KOSHECHKINA, Tetiana. Ensuring educational continuity under armed conflict: The underground university model in Ukraine. Educational Challenges, Kharkiv, UA, v. 31, n. 1, p. 30–44, 2026. DOI: 10.34142/2709-7986.2026.31.1.03. Disponível em: https://educationalchallenges.org.ua/index.php/education_challenges/article/view/530. Acesso em: 1 aug. 2026.