IQBALUNNISA, . On Neutral Elements in a Lattice. The Journal of the Indian Mathematical Society, [S. l.], v. 28, n. 1, p. 25–31, 1964. DOI: 10.18311/jims/1964/16852. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16852. Acesso em: 6 may. 2024.