DLOUHÁ, J. Úvodník 2015/X/3. Envigogika, Praha, Czech Republic, v. 10, n. 3, 2015. DOI: 10.14712/18023061.511. Disponível em: https://envigogika.cuni.cz/index.php/Envigogika/article/view/511. Acesso em: 16 dub. 2024.