Bloomberg.com, August 14 2007
marketwatch.com, August 13 2007
Wall Street Journal, 26 June 2007
Canadian Treasurer, June / July 2007
reportonbusiness.com, May 23 2007
San Francisco Business Times, April 20-26 2007
Treasury & Risk, February 2007
Yahoo Finance, 18 December 2006
Wall Street Journal, 12 September 2006