M. Mahendran, Lee. G.C., A. Shahrani, Bakar. R.A., K. Kadirgama, Amir. A.R., K.V. Sharma. “Diurnal Pattern and Estimation of Global Solar Radiation in East Coast Malaysia”. International Journal of Automotive and Mechanical Engineering, vol. 8, Dec. 2022, pp. 1162-75, doi:10.15282/ijame.8.2013.7.0095.