MAHMOOD, T.; EJAZ, A. On Bipolar Valued Fuzzy 𝒌-Ideals in Hemirings. The Nucleus, [S. l.], v. 52, n. 3, p. 115–122, 2015. Disponível em: http://202.83.167.189/index.php/Nucleus/article/view/644. Acesso em: 5 nov. 2024.