LAL, R. N.; LAL, P. K. n-Metroid Fuzzy Lattice. The Journal of the Indian Mathematical Society, [S. l.], v. 54, n. 1-4, p. 209–217, 1989. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/21898. Acesso em: 3 may. 2024.