1. 1) Environmental Restoration and Conservation Agency, The Air Pollution History of Japan. https://www.erca.go.jp/yobou/taiki/rekishi/07.html
2. 2) Environmental Restoration and Conservation Agency, The History of Environmental Issues. https://www.erca.go.jp/yobou/taiki/kangaeru/history/01.html
3. 3) Environmental Transport Policy Division, Environmental Management Bureau, Ministry of the Environment, Law to regulate Vehicle Exhaust in Japan, June 2015.
4. 4) Japan Environmental Management Association for Industry, Management of Poisonous Chemical Materials, 2003. http://www.meti.go.jp/policy/recycle/main/3r_policy/policy/pdf/text_2_1_a.pdf
5. 5) Ministry of the Environment, Minamata Disease Archives. http://www.nimd.go.jp/archives/english/tenji/a_corner//a01.html