UTAMI, Tri; ZULAKMAL, Zulakmal. OBSERVER LINIER POSITIF UNTUK SISTEM LINIER POSITIF. Jurnal Matematika UNAND, [S. l.], v. 4, n. 2, p. 46–50, 2019. DOI: 10.25077/jmu.4.2.46-50.2015. Disponível em: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/479. Acesso em: 4 nov. 2026.