ZARGAR, B. A.; MANZOOR, A. W. On zero-free regions for the derivative of a polynomial. BIBECHANA, [S. l.], v. 14, p. 48–53, 2016. DOI: 10.3126/bibechana.v14i0.15521. Disponível em: https://nepjol.info/index.php/BIBECHANA/article/view/15521. Acesso em: 20 may. 2024.