1. Technology roadmap. Delivering sustainable bioenergy;International Energy Agency (IEA),2017
2. Renewable energies and CO2: cost analysis, environmental impacts and technological trends – 2012 edition;Guerrero-Lemus,2013
3. Renewable energy resources;Twidell,2015
4. Sustainable energy: choosing among options;Tester,2012
5. Biomass gasification to produce syngas;Richardson,2015