http://www.nikkei.co.jp/kaigai/asia/20070817D2M1702K17.html

http://www.asahi.com/international/update/0817/TKY200708170354.html

http://www.asahi.com/international/update/0817/TKY200708170314.html

http://www.yomiuri.co.jp/atmoney/news/20070817ib03.htm

http://www.business-i.jp/news/sou-page/news/200708170024a.nwc 先物取引高が最高更新…大証、現物株のリスク回避で http://www.business-i.jp/news/kinyu-page/news/200708170034a.nwc