O. Ogunbiyi, C. T. Thomas, I. O. A. Omeiza, J. Akanni, and B. J. Olufeagba, “Optimal Control of the Cascaded Kainji-Jebba Hydroelectric Power Station Based on Conjugate Gradient”, Elektrika, vol. 18, no. 3, pp. 1–7, Dec. 2019.