DLOUHÁ, J. Editorial 2009/IV/2. Envigogika, Praha, Czech Republic, v. 4, n. 2, 2009. DOI: 10.14712/18023061.216. Disponível em: https://www.envigogika.cuni.cz/index.php/Envigogika/article/view/216. Acesso em: 22 sep. 2020.