ARYANI, Betty. SOLUSI POSITIF DARI SISTEM SINGULAR DISKRIT. Jurnal Matematika UNAND, [S. l.], v. 2, n. 3, p. 77–81, 2013. DOI: 10.25077/jmu.2.3.77-81.2013. Disponível em: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/75. Acesso em: 5 nov. 2026.