Mansourabad, Azadeh Mansouri, Mohammad Taghi Hamidi Beheshti, and Mohsen Simab. 2013. “A Hybrid PSO_Fuzzy_PID Controller for Gas Turbine Speed Control ”. International Journal of Control and Automation 6 (1), 13 - 24. http://sersc.org/journals/index.php/IJCA/article/view/144.