Jinayim, T. , Arunrungrasmi, S. , Tanitteerapan, T. , Mungkung, N. (2007). 'Highly Efficient Low Power Consumption Tracking Solar Cells for White LED-Based Lighting System '. World Academy of Science, Engineering and Technology, Open Science Index 4, International Journal of Electrical and Computer Engineering, 1(4), 678 - 683.