KARA, H.; KARAKAYA, V. On Some New Sequence Spaces Involving Invariant Means. The Journal of the Indian Mathematical Society, [S. l.], v. 70, n. 1-4, p. 49–55, 2003. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/21897. Acesso em: 2 may. 2024.