https://kanpou.npb.go.jp/20150710/20150710g00155/20150710g001550001f.html

http://news.goo.ne.jp/article/mainichi_region/region/mainichi_region-20150712ddlk16040183000c.html

http://www.jiji.com/jc/zc?k=201507/2015071100233&g=soc

http://news.goo.ne.jp/article/yomiuri/nation/20150709-567-OYT1T50175.html

http://www.nikkei.com/article/DGXLASFS11H01_R10C15A7PE8000/