MURSALEEN, M.; NOMAN, A. K. On some imbedding relations between certain sequence spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 4, p. 489–501, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2735. Acesso em: 5 dec. 2025.