Feb 12, 2012
David Pumphrey
The Financial Times
By James Politi and Ed CrooksJan 18, 2012Bloomberg
By Theophilos Argitis and Jeremy van LoonJan 18, 2012Aol Energy
By Margaret RyanJan 6, 2012Wonkblog (Washington Post blog)
By Brad PlumerNov 11, 2011Reuters
By Arshad Mohammed and Timothy GardnerNov 10, 2011NASDAQ
By David Bird and Tennille TracyJul 12, 2011C-SPAN
Jun 28, 2011- Apr 22, 2011
CNN International
Apr 19, 2011The Associated Press
Mar 30, 2011