CARVALHO, A. C. Middle class and public services in Brazil: commodity boom, economic crisis, and protests for a better public transportation system. Revista da Faculdade de Direito da UFRGS, Porto Alegre, v. 1, n. 39, 2018. DOI: 10.22456/0104-6594.84103. Disponível em: https://seer.ufrgs.br/index.php/revfacdir/article/view/84103. Acesso em: 9 maio. 2025.