[1] Sloan E D. Jr. Clathrate Hydrates of Natural Gases. 2nd ed. New York, USA: CRC Press, 1998.

[2] Hammerschmidt E G. Industrial and Engineering Chemistry, 1934, 26: 851.

[3] Makogon Y F. Gazovaia Promyshlennost, 1965, 5: 14.

[5] Intergover nmental Panel on Climate Change(IPCC), IPCC Fourth Assessment Report. 2007, WMO-UNEP, Geneva, Switzerland, 2007.

[6] Reeburgh W S, Chem. Rev., 2007, 107: 486.

[7] Boulart C, Connelly D P, Mowlem M C. Trends in Analytical Chemistry, 2010, 29(2): 186.

[8] Lamontagne R A, Rose-Pehresson S L, Grabowski K E, et al. Naval Research Laboratory Memorandum Report, 2001. 10.

[9] Zhang Xin, Hester K C, Ussler W, et al. Geophysical Research Letters, 2011, 38: L08605.

[10] White S N. Applied Spectroscopy, 2010, 64(7): 819.

[11] Zhang Xin, Kirkwood W J, Walz P M, et al. Applied Spectroscopy, 2012, 66(3): 237.

[12] Hester K C, Dunk R M, White S N, et al. Geochimica et Cosmochimica Acta, 2007, 71(12): 2947.