Y. Kassem, H. Camur, M. T. Adamu, T. Chikowero, and T. Apreala, “Prediction of Solar Irradiation in Africa using Linear-Nonlinear Hybrid Models”, Eng. Technol. Appl. Sci. Res., vol. 13, no. 4, pp. 11472–11483, Aug. 2023.