ALABA, Berhanu Assaye; DEJEN, Gerima Tefera. Birkhoff center of Almost Distributive Fuzzy Lattice. (IJCSAM) International Journal of Computing Science and Applied Mathematics, [S. l.], v. 3, n. 2, p. 65–70, 2017. Disponível em: https://journal.its.ac.id/index.php/ijcsam/article/view/4533. Acesso em: 30 jan. 2026.