1. K. A. Kvenvolden, inInternational Conference on Natural Gas Hydrates, E. D. Sloan, J. Happel. and M. Hnatow, eds. (N.Y. Acad. Sci., New York, 1994), p. 332.
2. G. D. Holder, V. A. Kamath, and S. P. Godbole,Anna. Rer. Energy 9:427 (1984).
3. I. Aya, K. Yamane and N. Yamada, inProceedings of the First (1991 ) International Offshore and Polar Engineering Conference, J. S. Chung, B. J. Natvig, K. Kaneko, and A. J. Ferrante, eds. ( Edinburgh, 1991 ), p. 427.
4. W. Harrison, R. Wendlandt, and E. D. Sloan.App. Geoehem. (accepted).
5. C., Marchetti,Clhnat. Change 1:58 (1977).