Public policies in Brazil: the pre-salt layer and the improvement of the welfare state. Research, Society and Development, [S. l.], v. 9, n. 9, p. e573997534, 2020. DOI: 10.33448/rsd-v9i9.7534. Disponível em: https://rsdjournal.org/rsd/article/view/7534. Acesso em: 5 dec. 2025.