1. Energy crops for the production of biofuels;Montross,2010
2. Biomass as local resource;Tojo,2014
3. Biomass compared to fossil fuels, solar and wind, Viaspace. http://www.viaspace.com/biomass_versus_alternatives.php>.
4. Unfolding the improvements of biomass history, Alternative Energy Solutions Info. http://www.alternativeenergysourcesinfo.com/biomass-history.html>.
5. Bioenergizeme virtual science fair: biomass history a timeline, Office of Energy Efficiency and Renewable Energy. https://energy.gov/eere/bioenergy/bioenergizeme-virtual-science-fair-biomass-history-timeline.