VAKARCHUK, S. B. On the best polynomial approximation of entire transcendental functions in banach spaces. I. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 9, p. 1123–1133, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5629. Acesso em: 11 apr. 2025.