Robandi, Imam, Vita Lystianingrum, Jamaaluddin Jamaaluddin, Izza Anshory, Muhammad Ruswandi Djalal, Mohamad Almas Prakasa, and Akhmad Ramadhani. 2026. “Stability Improvement of the Southern Sulawesi System Using the Hippopotamus Optimization Algorithm (HOA)”. SINERGI 30 (2). Jakarta, Indonesia:527-42. https://doi.org/10.22441/sinergi.2026.2.018.