https://headlines.yahoo.co.jp/hl?a=20171221-00023498-houdouk-soci

http://www.sankei.com/affairs/news/171221/afr1712210036-n1.html

https://headlines.yahoo.co.jp/hl?a=20171221-00000050-asahi-soci

https://headlines.yahoo.co.jp/article?a=20171221-00153826-diamond-bus_all

http://www.courts.go.jp/app/files/hanrei_jp/331/087331_hanrei.pdf