M. R. Djalal, M. Yunus, A. Imran, and H. Setiadi, “Capacitive Energy Storage (CES) Optimization For Load Frequency Control in Micro Hydro Power Plant Using Imperialist Competitive Algorithm (ICA)”, EMITTER Int’l J. of Engin. Technol., vol. 5, no. 2, pp. 279-297, Jan. 2018.