BORDBAR, H.; ZAHEDI, M. M.; JUN, Y. B. Internal and External Cubic Subalgebras of BCK/BCI-Algebras. Journal of the Indonesian Mathematical Society, [S. l.], v. 27, n. 1, p. 48–63, 2021. DOI: 10.22342/jims.27.1.968.48-63. Disponível em: http://jims-a.org/index.php/jimsa/article/view/968. Acesso em: 29 mar. 2024.