RAHMAN, Q. I. Extremal Properties of the Successive Derivatives of Polynomials and Rational Functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 15, p. 121–130, 1964. DOI: 10.7146/math.scand.a-10735. Disponível em: https://journals.msp.org/mscand/article/view/2610. Acesso em: 25 jul. 2026.