STEPANETS , A. I.; STEPANETS , N. I. Approximation by entire functions in the mean on the real axis. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 43, n. 1, p. 121–125, 1991. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9316. Acesso em: 6 dec. 2025.