1. (1) Prime Minister of Japan and His Cabinet: “Japan's Nationally Determined Contribution (NDC)-Japan's Greenhouse Gas Emission Reduction Target” (2021), https://unfccc.int/sites/default/files/NDC/2022-06/JAPAN_FIRST%20NDC%20%28UPDATED%20SUBMISSION%29.pdf
2. (2) HM Government: “Net Zero Strategy: Build Back Greener” (2021), https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1033990/net-zero-strategy-beis.pdf
3. (3) Ministry of Economy, Trade and Industry: “Green Growth Strategy Through Achieving Carbon Neutrality in 2050” (2022), https://www.meti.go.jp/english/policy/energy_environment/global_warming/ggs2050/index.html
4. (4) U. S. Department of Energy: “Department of Energy—How We're Moving to Net-Zero by 2050” (2021), https://www.energy.gov/articles/how-were-moving-net-zero-2050
5. (5) Policy Bureau, Ministry of Land, Infrastructure, Transport and Tourism: “White paper on land, infrastructure, transportation and tourism in Japan”, (in Japanese) (2020), https://www.mlit.go.jp/hakusyo/mlit/r01/hakusho/r02/html/n1115000.html