1. E. Domany, J. E. Gubernatis, and J. A. Krumhansl, J. Geophys. Res. 80, 4851 (1975).
2. D. H. Chung, Phys. Earth Planet. Int. 8, 113 (1974).
3. D. H. Chung, Trans. Am. Geophys. Union 54, 475 (1973).
4. G. Simmons and D. H. Chung, Trans. Am. Geophys. Union 49, 308 (1968).
5. E. Kröner, J. Mech. Phys. Solids 15, 319 (1967).