5EIA. Annual Energy Outlook 2008[R/OL]. [2008-04]. http://www. eia. doe. gov/oiaf/aeo.
6BORISS SILIVERSTOVS, GUILLAUME L'H'EGARET, ANNE NEUMANN, et al. International market integration for natural gas? A cointegration analysis of prices in Europe, North America and Japan[J].Energy Economics, 2005,7 : 603-615.
7EIA. Annual Energy Outlook 2008 with Projections to 2030[R/OL]. [2008-06]. http: //www. eia. doe. gov/ oiaf/aeo.
8HIRSCHHAUSEN, NEUMANN. Long-term contracts and asset specificity revisited: An empirical analysis of producer-importer relations in the natural gas industry [J].Rev Ind Organ,2008,32(6):131-143.
9European Commission (2005). Energy sector inquiry-issue paper[R]. European Commission Competition DG, 2005(11) :15.
10IAN GROSE, JOHN FLAHERTY. LNG carrier bench-marking[R]. 15th International Conference& Exhibition on Liquefied Natural Gas, [S. l]:[s. n. ], 2007.