VADIVELAN URKALAN; THOMAS ROSY; S. SUNIL VARMA. Radius Problem for Subclasses of Harmonic Univalent Functions. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 3, p. 369–375, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/392. Acesso em: 4 may. 2024.