ROSAS-MARTINEZ, V. H. Emptiness existence: A free-strategic view. Journal of Economics and Political Economy, [S. l.], v. 5, n. 3, p. 353–355, 2018. Disponível em: https://journals.econsciences.com/index.php/JEPE/article/view/1750. Acesso em: 18 feb. 2026.