BEEKMANN, . W.; CHANG, S.-C. $\lambda$-CONVERGENCE AND $\lambda$-REPLACEABILITY. Tamkang Journal of Mathematics, [S. l.], v. 26, n. 2, p. 145–147, 1995. DOI: 10.5556/j.tkjm.26.1995.4390. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4390. Acesso em: 2 may. 2024.