KUMAR, Prasanna. On a Complex Polynomial and Its Derivative. Proceedings of the Bulgarian Academy of Sciences, Sofia, Bulgaria, v. 76, n. 11, p. 1645–1655, 2023. DOI: 10.7546/CRABS.2023.11.01. Disponível em: https://proceedings.bas.bg/index.php/cr/article/view/413. Acesso em: 2 nov. 2026.