Reaction of Sao Paulo stock exchange corporative events: a test of the Efficient Market Hypothesis . REGE Revista de Gestão, [S. l.], v. 13, n. 3, p. 57–74, 2006. DOI: 10.5700/issn.2177-8736.rege.2006.36566. Disponível em: https://revistas.usp.br/rege/article/view/36566.. Acesso em: 2 may. 2024.