http://www.asahi.com/articles/ASJ1F5KK1J1FPTIL013.html

http://bylines.news.yahoo.co.jp/maedatsunehiko/20160116-00053461/

http://www.asahi.com/articles/ASHDK3JJDHDKPTIL005.html?iref=comtop_6_01

http://headlines.yahoo.co.jp/hl?a=20160114-00000069-jij-pol

http://www.sankei.com/west/news/160116/wst1601160081-n1.html