1. D. W. Davidson, in ‘Water — A Comprehensive Treatise’, Ed. F. Franks, Plenum Press, New York 1973, Vol. 2, Chap. 3.
2. G. A. Jeffrey, in ‘Inclusion Compounds’, Ed. J. L. Atwood, J. E. D. Davies and D. D. MacNicol, Academic Press, London 1984, Vol. 1, Chap. 5.
3. D. W. Davidson and J. A. Ripmeester, in ‘Inclusion Compounds’, Ed. J. L. Atwood, J. E. D. Davies and D. D. MacNicol, Academic Press, London 1984, Vol. 3, Chap. 3.
4. E. Berecz and M. Balla-Achs, ‘Gas Hydrates, Studies in Inorganic Chemistry 4’, Elsevier, Amsterdam-Oxford-New York 1983.
5. O. Yamamuro and H. Suga, J. Thermal Anal., 35 (1989) 2025.