PERSSON, L.-E.; TEPHNADZE, G.; TUTBERIDZE, G.; WALL , P. Some new resuts concering strong convergence of Fejér means with respect to Vilenkin systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 4, p. 544–555, 2021. DOI: 10.37863/umzh.v73i4.226. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/226. Acesso em: 14 apr. 2025.