1. Strategic Energy Plan (2014) Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry, Japan. http://www.enecho.meti.go.jp/en/category/others/basic_plan/pdf/4th_strategic_energy_plan.pdf . Accessed 27 Sept 2015
2. Strategic Road Map for Hydrogen and Fuel Cells (2014) Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry, Japan. http://www.meti.go.jp/english/press/2014/0624_04.html . Accessed 27 Sept 2015
3. Annual Report on Energy (Energy White Paper 2014) Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry, Japan. http://www.meti.go.jp/english/report/index_whitepaper.html . Accessed 27 Sept 2015
4. Hydrogen Energy White Paper (2015) New Energy and Industrial Technology Development Organization (NEDO), Japan. http://www.nedo.go.jp/content/100567362 . Accessed 27 Sept 2015 (in Japanese)
5. The Japan Society of Mechanical Engineers (2002) Thermodynamics (JSME textbook series). Maruzen, Tokyo Japan (in Japanese)