2006-11-29 ■ http://business.nikkeibp.co.jp/article/life/20061031/112832/ http://business.nikkeibp.co.jp/article/skillup/20061106/113132/ http://business.nikkeibp.co.jp/article/skillup/20061114/113660/ http://business.nikkeibp.co.jp/article/manage/20061120/114089/