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2. Constitutive relations for soils;Gudehus,1984
3. An incrementally non-linear constitutive law of second order and its application to localisation;Darve,1984
4. Comportement mécanique des argiles saturées sur divers chemins de sollicitation monotones et cyliques. Application à une modélisation élasto-plastique et visco-plastique;Hicher,1985
5. Constitutive instabilities in incrementally non-linear modelling;Darve,1987