ROGOVIN, S.; SHIBAHARA, H.; ZHOU, Q. Some remarks on the Gehring–Hayman theorem. Annales Fennici Mathematici, [S. l.], v. 48, n. 1, p. 141–152, 2023. DOI: 10.54330/afm.125920. Disponível em: https://afm.journal.fi/article/view/125920. Acesso em: 8 feb. 2023.