1. European Commission. Biofuels in the European Union – a vision for 2030 and beyond. Luxembourg: The Commission; 2006.
2. Fuels for the future;Reijnders;J Integr Environ Sci,2009
3. International Organization for Standardization. ISO 14040:2006 Environmental management – life cycle assessment – principles and framework. Geneva: The Organization; 2006.
4. International Organization for Standardization. ISO 14044:2006 Environmental management – life cycle assessment – requirements and guidelines. Geneva: The Organization; 2006.
5. Life cycle sustainability assessment of fuels;Zhou;Fuel,2007