http://rocketnews24.com/2015/03/27/562710/

http://news.livedoor.com/article/detail/9941705/

http://headlines.yahoo.co.jp/hl?a=20150331-00000016-khks-l04

http://www.bengo4.com/topics/2892/ http://www.asahi.com/articles/ASH3Z6RQGH3ZUTIL05G.html

http://www.47news.jp/47topics/e/263652.php

http://www.sankei.com/affairs/news/150331/afr1503310028-n1.html