http://movie.maeda-y.com/movie/01921.htm

http://headlines.yahoo.co.jp/hl?a=20141115-00000084-mai-soci

http://getnews.jp/archives/700209

http://www.sanseido-publ.co.jp/publ/roppou/roppou_dic/moroku2015.html

http://www.sllr.j.u-tokyo.ac.jp/09/papers/v09part07%28ota%29.pdf