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2. National Resources Defense Fund, 2015. In the US Southeast, natural forests are being felled to fuel overseas. New York.
3. Pearce, Fred, 2015. Up in Flames: How biomass burning wrecksEurope’s forests. November, Fern.
4. Stephenson, Anna, MacKay, David, 2014. Life Cycle Impacts of Biomass Electricity in 2020: Scenarios for Assessing the Greenhouse Gas Impacts and Energy Input Requirements of Using North American Woody Biomass for Electricity Generation in the UK. July, UK Department of Energy & Climate Change.
5. REN 21, 2017. Renewables 2017: Global Status Report, June 7th.