Muda, H., A. Othman, and N. Julai. “Economic Dispatch Strategy for Solar Hybrid System Using Lambda Iteration Method”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 3-10, Dec. 2017, pp. 85-89, https://jtec.utem.edu.my/jtec/article/view/3159.