MÓNUS, Ferenc; LECHNER, Christine. An innovative way in education for sustainable development: e-School4s – e-school for sustainability in the Danube region. Journal of Applied Technical and Educational Sciences, [S. l.], v. 7, n. 4, p. 89–96, 2017. DOI: 10.24368/jates.v7i4.13. Disponível em: https://jates.org/index.php/jatespath/article/view/13. Acesso em: 3 apr. 2025.