1. On prediction of depreciation time of fossil fuel in Malaysia;Muda;J Math Stat,2012
2. World energy production, population growth, and the road to the Olduvai Gorge;Duncan;Population Environ,2001
3. Energy from fossil fuels;Hubbert,1949
4. Malaysia Energy Information Unit of Department of Energy Management and Industrial Development. (Ed.). Malaysia Energy Statistics Handbook 2014 (1st Ed.). Available from: 〈http://www.st.gov.my/index.php/ms/download-page/category/116-statistics-energy.html?download=480:Malaysia-energy-statistics-handbook-2014〉; 2014.
5. Recent developments in biodiesel fuels;Demirbas;Int J Green Energy,2007