Coefficient Estimates for Two New Subclass of Bi-Univalent Functions Defined by Cosine and Logarithmic Functions. Coefficient Estimates for two new Subclass. Physical Education, Health and Social Sciences, [S. l.], v. 3, n. 3, p. 80–96, 2025. DOI: 10.63163/jpehss.v3i3.684. Disponível em: https://journal-of-social-education.org/index.php/Jorunal/article/view/684. Acesso em: 6 may. 2026.