資源
http://www.nikkei.co.jp/news/main/20050120AT1D1907T19012005.html
http://www.nikkei.co.jp/news/main/20050114AT1D1308G13012005.html
http://www.nikkei.co.jp/news/main/20050120AT1D1907T19012005.html
http://www.nikkei.co.jp/news/main/20050114AT1D1308G13012005.html