BAHRI, Susila; TOBING, Christ Samuel. OPTIMIZATION MODELING OF BIOGAS PRODUCTION PERFORMANCE FROM COW MANURE AND SUGARCANE TOPS USING THE GAUSS-NEWTON METHOD. Jurnal Matematika UNAND, [S. l.], v. 15, n. 4, p. 466–480, 2026. DOI: 10.25077/jmua.15.4.466-480.2026. Disponível em: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/1766. Acesso em: 21 oct. 2026.