1. International Energy Agency. IEA Methodology. Closing Oil Stock Levels in Days of Net Imports, 2010.
2. Energy Information Administration. Petroleum. International Energy Statistics, 2010.
3. Ministry of Economy, Trade and Industry, Energy Statistics, Tokyo: 2008.
4. Xinhua Net. Hu Jintao advised China would rise GDP twice than 2000 till 2020 in the report of 17th National Congressof the Communist Party of China. 17th National Congress of the Communist Party of China, Beijing: 2007.
5. National Statistics Bureau. Annual Statistics, Beijing: 2010.