http://www.meti.go.jp/press/2013/03/20140311001/20140311001.html

http://www.hosokai.or.jp/item/annai/shinkan/shinkan.html

http://www.courts.go.jp/search/jhsp0030?hanreiid=83977&hanreiKbn=04

http://headlines.yahoo.co.jp/hl?a=20140312-00000243-yamagata-l06

http://www3.nhk.or.jp/shutoken-news/20140312/5880201.html

http://dot.asahi.com/news/incident/2014031200039.html