Role of the European Union in Applying the Principles of Subsidiarity and Proportionality. Academic Journal of Interdisciplinary Studies, [S. l.], v. 2, n. 8, p. 417, 2013. Disponível em: https://www.richtmann.org/journal/index.php/ajis/article/view/752.. Acesso em: 2 may. 2024.