http://www.business-i.jp/news/sou-page/news/200704280026a.nwc

http://www.asahi.com/international/update/0428/TKY200704280048.html

http://www.cnn.co.jp/business/CNN200704280012.html

http://www.nikkei.co.jp/news/kaigai/20070428AT2M2800A28042007.html http://www.asahi.com/international/update/0428/TKY200704280093.html

http://www.nikkei.co.jp/news/sangyo/20070428AT1D2706I27042007.html

http://www.business-i.jp/news/sou-page/news/200704280039a.nwc

http://www.yomiuri.co.jp/atmoney/news/20070427i315.htm

http://www.business-i.jp/news/ind-page/news/200704280016a.nwc