HYLTÉN-CAVALLIUS, C. Some extremal problems for trigonometrical and complex polynomials. MATHEMATICA SCANDINAVICA, [S. l.], v. 3, p. 5–20, 1955. DOI: 10.7146/math.scand.a-10420. Disponível em: https://www.mscand.dk/article/view/10420. Acesso em: 24 nov. 2024.