SUBHA, Dr. V.S. ROUGH k-IDEALS IN SEMIRINGS. International Journal for Research Publication and Seminar, [S. l.], v. 5, n. 1, p. 117–126, 2014. Disponível em: https://jrps.shodhsagar.com/index.php/j/article/view/48. Acesso em: 8 apr. 2025.