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2. On energy criteria of plastic instability;Petryk,1985
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4. An analysis of stability of equilibrium and of quasi-static transformations on the basis of the dissipation function;Fedelich;Eur. J. Mech. A Solids,1997
5. Nonconvex energy minimization and dislocation structures in ductile single crystals;Ortiz;J. Mech. Phys. Solids,1999