http://toyokeizai.net/articles/-/161721

http://headlines.yahoo.co.jp/hl?a=20170310-00000122-jij-soci

http://www.kanaoka-law.com/archives/347

https://news.nifty.com/article/domestic/society/12198-85879/

http://mainichi.jp/articles/20170311/ddm/041/040/115000c http://www.courts.go.jp/app/hanrei_jp/detail2?id=86587