JOHANNING, D.; HAUBERT, L. Revisiting the Meaning of the Denominator. Ohio Journal of School Mathematics, [S. l.], v. 75, n. 1, 2017. Disponível em: https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/5578. Acesso em: 29 apr. 2026.