ONG, K. W.; TAN, S. L.; TU, Y. E. Integral operators and univalent functions. Tamkang Journal of Mathematics, [S. l.], v. 43, n. 2, p. 215–221, 2012. DOI: 10.5556/j.tkjm.43.2012.630. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/630. Acesso em: 28 apr. 2024.