http://www.nikkei-science.com/201609_036.html

http://sirabee.com/2016/07/21/139237/

http://www.news24.jp/articles/2016/07/21/07335961.html

http://mainichi.jp/articles/20160722/k00/00e/040/215000c

http://www.christiantoday.co.jp/articles/21504/20160720/tokyo-high-court-decision-anglican-ex-music-teacher-kimigayo.htm