RODRÍGUEZ, J. A note on summability in Banach spaces. Annales Fennici Mathematici, [S. l.], v. 50, n. 1, p. 49–58, 2025. DOI: 10.54330/afm.156613. Disponível em: https://afm.journal.fi/article/view/156613. Acesso em: 8 feb. 2025.