5Ross D J K,Bustin R M. Characterizing the shale gas resource potential of Devonian-Mississippian strata in the west Canada sedimentary basin:Application of an intergrated formation e valuation[J]. AAPG Bulletin, 2008,92(1 ) : 87-125.
6International Energy Agency. World Energy Outlook 2013. ISBN: 978-92-64-20130-9, 2013-12.
7U. S. Energy Information Administration. Technically Recoverable Shale Oil and Shale Gas Resources: An Assessment of 137 Shale Formations in 41 Countries Outside the United States. 2013-06.