1. Renewables information;IEA (International Energy Agency),2015
2. IEA, Technology roadmap: bioenergy for heat and power, 2012, http://www.iea.org/publications/freepublications/publication/2012_Bioenergy_Roadmap_2nd_Edition_WEB.pdf [cited 2017 April 7].
3. NEDO (New Energy and Industrial Technology Development Organization), Estimation of biomass utilization potential, http://app1.infoc.nedo.go.jp/biomass/index.html [in Japanese] [cited 2017 April 7].
4. Forestry Agency, Annual report on trends in forests and forestry (Fiscal Year 2015), http://www.rinya.maff.go.jp/j/kikaku/hakusyo/26hakusyo/zenbun.html [in Japanese] [cited 2017 April 7].
5. How to account for CO2 emissions from biomass in an LCA;Rabl;Int. J. LCA,2007