Mohamad, A. N., Nigussie Dedefi Waritu, Gizachew kefelew Hailu, and Mengistu Chalchisa Wakjira. “Biodiversity Strategy Improved in Ethiopia by Using Optimal Control System”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 43, no. 1 (January 17, 2019): 166–183. Accessed March 24, 2026. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/9657.