http://0-oo.net/misc2/trains

http://news.goo.ne.jp/article/niftybusiness/business/niftybusiness-dt-6805.html?fr=rk

http://www.utp.or.jp/bd/978-4-13-055131-1.html

http://gigazine.net/news/20111003_prolonged_stress_can_shrink_the_brain/

http://news.goo.ne.jp/article/sankei/nation/snk20111003091.html?fr=rk

http://news.goo.ne.jp/article/diamond/nation/2011100310-diamond.html?fr=rk

http://headlines.yahoo.co.jp/hl?a=20111004-00000009-khks-soci

http://www.asahi.com/national/update/1003/OSK201110030130.html

http://news.goo.ne.jp/article/jiji/politics/jiji-111003X054.html

http://www.asahi.com/national/update/1004/TKY201110030626.html