1. R. Hill, The Mathematical Theory of Plasticity, Oxford Press (1950).
2. J. W. Rudnicki and J. R. Rice, J. Mech. Phys. Solids, 23 (1975), 371.
3. J. R. Rice, Theoretical and Applied Mechanics, Proc. 14
th
Int. U. Theor. Appl. Mech. Cong, (ed., W. T. Koiter), North-Holland, 1 (1976), 207.
4. R. Hill, J. Mech. Phys. Solids, 15 (1967), 79.
5. T. H. Lin, Adv. Appl. Mech., 11 (1971), 255.