UNGURU, Alexandru. Pandemia 2020 – restart pedagogic. CONCEPT, [S. l.], v. 20, n. 1, p. 61–65, 2020. DOI: 10.37130/zxgc5j88. Disponível em: https://concept.unatcpress.ro/index.php/cpt/article/view/139. Acesso em: 2 sep. 2026.