http://kumanichi.com/news/local/main/20150129002.xhtml

http://headlines.yahoo.co.jp/hl?a=20150129-00000002-ryu-oki

http://mainichi.jp/select/news/20150129k0000e040219000c.html

http://biz-journal.jp/2015/01/post_8747.html

http://news.goo.ne.jp/article/mainichi/politics/mainichi-20150130k0000m010070000c.html http://www.moj.go.jp/content/001131519.pdf