http://headlines.yahoo.co.jp/hl?a=20150623-00010002-doshin-soci

http://news.goo.ne.jp/article/mainichi/nation/mainichi-20150624k0000m040070000c.html

http://www.fukuishimbun.co.jp/localnews/economics/73709.html

http://blog.livedoor.jp/schulze/archives/52122980.html

http://news.goo.ne.jp/article/sankei/nation/sankei-afr1506230022.html