TRIPATHY, B. C.; SEN, M. On a new class of sequences related to the space $ \ell^p$. Tamkang Journal of Mathematics, [S. l.], v. 33, n. 2, p. 167–172, 2002. DOI: 10.5556/j.tkjm.33.2002.296. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/296. Acesso em: 7 may. 2024.