TY - JOUR AU - Vlado Lubarda TI - The elastic - plastic constitutive relation JO - Theoretical and applied mechanics PY - 1981 SP - 101 VL - 7 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1981_7_1_a11/ LA - en ID - TAM_1981_7_1_a11 ER -