1. New Energy and Industrial Technology Development Organization (NEDO). Biomass energy introduction guidebook, 2nd ed.; 2005 [in Japanese].
2. The Institute of Applied Energy. The Investigation on the biomass energy introduction system and roadmap, etc.; 2005 [in Japanese].
3. The Ministry of Agriculture, Forestry and Fisheries. Biomass nippon strategy; 2006 [in Japanese].
4. The Ministry of Economy, Trade and Industry. The new nation energy strategy; 2006 [in Japanese].
5. The Ministry of Economy, Trade and Industry. Next-generation vehicle and fuel initiative; 2007 [in Japanese].