http://gigazine.net/news/20140629-crime-daily-rhythms/

http://gigazine.net/news/20140701-why-teenager-act-crazy/

http://r25.yahoo.co.jp/fushigi/sp_column_detail/?id=20140623-00036699-r25&vos=nr25alsa20110119

http://www.asahi.com/articles/ASG716CRKG71UTIL03P.html

http://matimura.cocolog-nifty.com/matimulog/2014/06/lawinfo-055f.html

http://headlines.yahoo.co.jp/hl?a=20140701-00050049-yom-soci

http://www.chibanippo.co.jp/newspack/20140701/201465