1. Assessing sustainability of bio-fuels;Azapagic,2011
2. Towards Sustainable Production and Use of Resources: Assessing Bio-fuels;Bringezu,2009
3. Biorefineries: current activities and future developments;Demirbas;Energy Convers. Manage.,2009
4. Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the Promotion of the Use of Energy from Renewable Sources and Amending and Subsequently Repelling Directives 2001/77/EC and 2003/30/EC;European Commission,2009
5. Energy Independence and Security Act of 2007. Public Law 110–140 – DEC. 19, 2007;US Federal Government,2007