2007-12-02 ■ http://blog.livedoor.jp/dqnplus/archives/1062202.htmlhttp://business.nikkeibp.co.jp/article/life/20071129/141774/?P=1 http://business.nikkeibp.co.jp/article/world/20071129/141916/ http://news.livedoor.com/article/detail/3393749/