“Hopf Bifurcation in a Dynamic Mathematical Model in Facultative Waste Stabilization Pond”. Jurnal Matematika, Statistika dan Komputasi 21, no. 2 (January 12, 2025): 544–559. Accessed August 8, 2026. https://journal-598.unhas.ac.id/index.php/jmsk/article/view/41888.