7. References#

    1. EL GHARIB and C. CHAVANT, « Calibration on triaxial tests of a viscoplastic behavior law for argillite based on the Drucker_Prager model », H-T64-2008-04194-FR,

    1. EL GHARIB and C. CHAVANT, « Implementation of a simplified viscoplastic model in Code_Aster », H-T64-2007-01800-FR,