Abdullah, Mohd Noor, and M. Solahuddin M. Salim. 2022. “Optimal Economic and Emission Dispatch of Photovoltaic Integrated Power System Using Firefly Algorithm”. International Journal of Integrated Engineering 14 (3): 50-62. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/9131.