1. Modern Shale Gas Development in the United States: A Primer;GWPC,2009
2. Golden rules for a golden age of gas: world energy outlook – special report on unconventional gas;IEA,2012
3. World Energy Outlook 2011: Are We Entering a Golden Age of Gas?;IEA,2011
4. Technically Recoverable Shale Oil and Shale Gas Resources: An Assessment of 137 Shale Formations in 41 Countries Outside the United States;U.S. Energy Information Administration,2013
5. Annual Energy Outlook 2012;U.S. Energy Information Administration,2012