AHMAD, Khurshid; ARACI, Serkan; HAQ, Mirajul; KHAN, Bilal. Upper Bound of the Third Hankel Determinant for a Subclass of Analytic Functions Subordinate to Cosine Function. VFAST Transactions on Mathematics, [S. l.], v. 8, n. 1, p. 35–44, 2022. DOI: 10.21015/vtm.v8i1.392. Disponível em: https://vfast.org/journals/index.php/VTM/article/view/392. Acesso em: 28 apr. 2026.