1. 1. Ethanol for instance can be produced using 1G, 2G and 3G procedures
   2. Jump up^ Energikunskap | Lär dig mer om energi - E.ON
   3. Jump up^ Bio ethanol fires information bio ethanol fireplace. (2009)
   4. Jump up^ see "Breaking the Biological Barriers to Cellulosic Ethanol"
   5. Jump up^ Brinkman, N. et al., "Well-to-Wheels Analysis of Advanced/Vehicle Systems", 2005
   6. Jump up^ Farrell, A.E.; et al. (2006). "Ethanol can Contribute to Energy and Environmental Goals". Science. 311: 506–8. PMID 16439656. doi:10.1126/science.1121416.
   7. M.W. Rosegrant, S. Msangi, T.Sulser, and R.Valmonte-Santos, Biofuels and the Global Food Balance (Washington, DC: International Food Policy Research Institute, 2006)
   8.  ↑ Qiu, H., Huang, J., Yang, J., Rozelle, S., Zhang, Y., Zhang, Y., et al. (2009). Bioethanol development in China and the potential impacts on its agricultural economy. Applied Energy, 87(1), 76- 83. doi:10.1016/j.apenergy.2009.07.015.
   9. ↑ Thomas, V. M., Choi, D. G., Luo, D., Okwo, A., & Wang, J. H. (2009). Relation of biofuel to bioelectricity and agriculture: Food security, fuel security, and reducing greenhouse emissions. Chemical Engineering Research and Design, 87(9), 1140-1146
   10. ↑ Naylor, R., Liska, A., & Burke, M. (2007). The Ripple Effect: Biofuels, Food Security, and the Environment. Environment, 49(9), 30-43. Retrieved November 16, 2009, from General Science Full Text database
   11. ↑ Oliver R. Inderwildi, David A. King. "Quo Vadis Biofuels"
   12. ↑ Chris Somerville. ""Development of Cellulosic Biofuels""