Analysis of the impact of Operation Lava Jato on Petrobras stocks: a statistical approach based on the news. Research, Society and Development, [S. l.], v. 12, n. 4, p. e27312441209, 2023. DOI: 10.33448/rsd-v12i4.41209. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/41209. Acesso em: 28 jun. 2025.