1. Budd, W. F., and Radok, D., Rep. Prog. Phys., 34, 1–70 (1971).
2. Meier, M. F., et al., Snow, Ice and Permafrost Research Establishment Report No. 38 (1957).
3. Ishida, T., Tabata, T., Suzuki, Y., Ono, N., and Fujino, K., Sea Ice (edit. by Karlsson, T.), 174–175 (Reykjavik National Research Council, 1972).
4. King, G. C. P., and Bilham, R. G., Phil. Trans. R. Soc., A 274, 209–217 (1973).
5. Ewing, J. A., and Hogben, N., National Physical Laboratory, Ship Report 150 (1971).