1. World Energy Outlook 2012;International Energy Agency (IEA),2012
2. Medium-term Renewable Energy Market Report 2013 Market Trends and Projections to 2018,2013
3. Energy production from biomass (part 1): overview of biomass;McKendry;Bioresour. Technol.,2002
4. Biomass upgrading by torrefaction for the production of biofuels: a review;Van der Stelt;Biomass Bioenergy,2011
5. S.C. Bhattacharya. Carbonized and uncarbonized briquettes from residues. Workshop on Biomass Thermal Processing Projects; 1990 October 1-5; London; United Kingdom.