RAHMAN, Q. I. Extremal Properties of the Successive Derivatives of Polynomials and Rational Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 15, p. 121–130, 1964. DOI: 10.7146/math.scand.a-10735. Disponível em: https://www.mscand.dk/article/view/10735. Acesso em: 4 may. 2024.