D. Ballerini, Biofuels -Meeting the energy and environmental challenges of the transportation sector, 2012.

M. Lindblom, Colloquium on Black Liquor combustion and gasification, pp.13-16, 2003.

J. P. Burzynski, Biomass gasification conference, Feb, pp.27-28, 2007.

R. M. Swanson, A. Platon, J. A. Satrio, and R. C. Brown, Techno-economic analysis of biomass-to-liquids production based on gasification, Fuel, vol.89, pp.11-19, 2010.
DOI : 10.1016/j.fuel.2010.07.027

M. J. Eu-directive-stelt, H. Gerhauser, J. H. Kiel, and K. J. Ptasinski, 10 EU COM (2012) 595 final, Proposal for a Directive Regulation of Fuels and Fuel Additives: Changes to Renewable Fuel Standard Program; Final Rule Biomass upgrading by torrefaction for the production of biofuels: A review, Oct. 11 Environmental Protection Agency, pp.3748-3762, 2009.

M. Phanphanich and S. Mani, Impact of torrefaction on the grindability and fuel characteristics of forest biomass, Bioresource Technology, vol.102, issue.2, pp.1246-1253, 2011.
DOI : 10.1016/j.biortech.2010.08.028

P. C. Bergman, A. R. Boersma, and J. H. Kiel, Torrefaction for entrained-flow gasification of biomass, 2005.

. C. Viguie´jviguie´j and N. Ullrich, The BioTfueL project, p.20, 2012.

S. S. Pansare and J. D. Allison, An investigation of the effect of ultra-low concentrations of sulfur on a Co/??-Al2O3 Fischer???Tropsch synthesis catalyst, Applied Catalysis A: General, vol.387, issue.1-2, pp.224-230, 2010.
DOI : 10.1016/j.apcata.2010.08.031

S. Fedou, . Xtl, and . Projects, Around Gasel TM Technological Solutions for, IIChE Natural Gas Conference, 2011.

K. Sunde, A. Brekke, and B. Solberg, Environmental impacts and costs of woody Biomass-to-Liquid (BTL) production and use ??? A review, Forest Policy and Economics, vol.13, issue.8, pp.591-602, 2011.
DOI : 10.1016/j.forpol.2011.05.008