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2. A More Fundamental Approach to Plastic Stress-Strain Relations;Drucker,1952
3. Corrections and Additions to the Mechanical Foundations of Elasticity and Fluid Dynamics;Truesdell;J. Nat'l. Mech. Anal.,1953
4. A General Theory of Uniqueness and Stability in Elastic-Plastic Solids;Hill;J. Mech. Phys. Solids,1958
5. On Prager's Hardening Rule;Shield;Z. Angew, Math. Phys.,1958