DING, H. On Global Inversion Theorems in the Plane. Contemporary Mathematics, [S. l.], v. 2, n. 4, p. 271–278, 2021. DOI: 10.37256/cm.242021998. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/998. Acesso em: 8 apr. 2025.