FRASIN, B. A. Differential operator of meromorphic p-valent functions. Tamkang Journal of Mathematics, [S. l.], v. 43, n. 3, p. 417–422, 2012. DOI: 10.5556/j.tkjm.43.2012.888. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/888. Acesso em: 31 jul. 2025.