Goh, H. , Goh, K. , Sukri, W. , Chua, Q. , Lee, S. , Kok, B. (2015), 'Green-Y Model for Preliminary Sustainable Economical Concept of Renewable Energy Sources Deployment in ASEAN Countries', World Academy of Science, Engineering and Technology, Open Science Index 98, International Journal of Educational and Pedagogical Sciences, 9(2), 32 - 35.