1. About the Bioenergy Technologies Office: Growing America’s Energy Future (US DOE BETO, 2015); http://energy.gov/eere/bioenergy/about-bioenergy-technologies-office-growing-americas-energy-future
2. State of Play on the Sustainability of Solid and Gaseous Biomass Used for Electricity, Heating and Cooling in the EU (European Commission, 2014); https://ec.europa.eu/energy/en/topics/renewable-energy/biomass
3. IPCC Task Force on National Greenhouse Gas Inventories (TFI), General Guidance and Other Inventory Issues (IPCC, accessed 6 January 2016); http://www.ipcc-nggip.iges.or.jp/faq/faq.html
4. Wang, M., Wu, M. & Huo, H. Life-cycle energy and greenhouse gas emission impacts of different corn ethanol plan types. Environ. Res. Lett. 2, 024001 (2007).
5. Huo, H., Wang, M., Bloyd, C. & Putsche, V. Life-cycle assessment of energy use and greenhouse gas emissions of soybean-derived biodiesel and renewable fuels. Environ. Sci. Technol. 43, 750–756 (2009).