http://zasshi.news.yahoo.co.jp/article?a=20160511-00006137-sbunshun-soci

http://www.asahi.com/articles/ASJ5C5GB5J5CUTIL02K.html

http://blog.livedoor.jp/schulze/archives/52155337.html

http://ameblo.jp/kantokozo/entry-12159184821.html http://ameblo.jp/kantokozo/entry-12159184821.html

http://news.goo.ne.jp/article/kahoku/nation/kahoku-01_20160511_13013.html