JORDAN, M. P. Openings in Quite Formal Scientific Texts. Discourse and Writing/Rédactologie, [S. l.], v. 9, n. 3, p. 18–37, 1991. DOI: 10.31468/cjsdwr.319. Disponível em: https://cjsdw.journals.publicknowledgeproject.org/index.php/dwr/article/view/319. Acesso em: 22 feb. 2025.