1. Role of renewable energy sources in environmental protection: A review;Panwar;Renew. Sust. Energ. Rev.,2011
2. When will fossil fuel reserves be diminished?;Shafiee;Energ. Policy,2009
3. Biofuels, greenhouse gases and climate change. A review, Agron;Bessou;Sustain. Dev.,2011
4. Global warming and tropical land-use change: Greenhouse gas emissions from biomass burning, decomposition and soils in forest conversion, shifting cultivation and secondary vegetation, Clim;Fearnside;Change,2000
5. Political, economic and environmental impacts of biofuels: A review, Appl;Demirbas;Energy,2009