KARTAL, B. Necessary and sufficient conditions for the inclusion relation between two summability methods. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 22, p. 5–11, 2023. Disponível em: https://studmath.up.krakow.pl/article/view/10153. Acesso em: 28 mar. 2024.