LINCHUK, N. E.; LINCHUK, S. S. On some properties of Gelfond – Leontiev generalized integration operators. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 1, p. 61–68, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2698. Acesso em: 27 apr. 2025.