1. United Nations, The Paris Agreement, 2015, available at http://unfccc.int/files/essential_background/convention/application/pdf/english_paris_agreement.pdf.
2. Ministry of the Environment, Government of Japan, Submission of Japan's Intended Nationally Determined Contribution (INDC) available at https://www.env.go.jp/en/earth/cc/2030indc_mat01.pdf.
3. United Nations, Kyoto Protocol, available at http://unfccc.int/resource/docs/convkp/kpeng.pdf.
4. Advanced Materials for Clean Energy, Chapt.16;Kojima,2015
5. Comparative Study of Ammonia‐fueled Solid Oxide Fuel Cell Systems