http://www.asahi.com/business/reuters/CRBKCN10R0BT.html

http://www.asahi.com/articles/ASJ851475J84ULOB01Z.html

http://www.chunichi.co.jp/s/article/2016081890224100.html

http://news.goo.ne.jp/article/mainichi_region/region/mainichi_region-20160812ddlk13040075000c.html

http://headlines.yahoo.co.jp/hl?a=20160819-00000012-asahi-soci