JAIN, P. K.; ARORA, K. K.; SINHA, D. P. On Banach Spaces of the Smallest Uncountable Density With PRI. The Journal of the Indian Mathematical Society, [S. l.], v. 66, n. 1-4, p. 185–191, 1999. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/21989. Acesso em: 3 may. 2024.