1. Y. F. Makogon:Hydrates of Natural Gas, W. J. Cielewicz Translation, PennWell Publishing, Tulsa, Oklahoma, 1981.
2. J. L. Cox (ed.):Natural Gas Hydrates: Properties, Occurrence and Recovery, Butterworth Publisher, Boston, Massachusetts, 1983.
3. D. W. Davidson:Clathrate Hydrates (Water: A Comprehensive Treatise Vol. 2, ed. F. Franks), Chapter 3, Plenum, New York, 1973.
4. J. Finjord:Hydrates of Natural Gas, A State-of-the Art Study with Emphasis on Fundamental Properties, T. 11/83, Rogaland Research Institute, Stavanger, Norway, 1983.
5. G. D. Holder, S. P. Zetts, and N. Pradhan:Rev. Chem. Eng. 5, 1 (1988).