KALE, M. V.; GAIKWAD, N. S.; CHHABRIA, S. C. Gradenigo’s syndrome: a petrous apex lesion. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 6, n. 4, p. 773–775, 2020. DOI: 10.18203/issn.2454-5929.ijohns20201049. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/2082. Acesso em: 2 nov. 2025.