1. Bioenergy options for a cleaner environment in developed and developing countries;Sims,2004
2. Bio-energy in Europe: changing technology choices;Faaij;Energy Policy,2006
3. Pre-treatment technologies, and their effect on international bioenergy supply chain logistics;Uslu;Energy,2008
4. US Department of Energy, Energy efficiency and renewable energy: biomass program (website), Tech. rep., http://www1.eere.energy.gov/biomass/index.html, Accessed April, 2011.
5. The biomass assessment handbook. Bioenergy for a sustainable environment;Rosillo-Calle,2007