1. World Energy Investment Outlook 2003 Insights;IEA,2003
2. International Energy Outlook 2009;EIA,2009
3. Kyoto protocol to the United Nations Framework Convention on Climate Change;UN,1998
4. Status review of renewable and energy efficiency support;CEER,2008
5. Current status and development policies on renewable energy technology research in Taiwan;Tsai;Renewable and Sustainable Energy Reviews,2005