TY - JOUR AU - Ivan Ĺ estak TI - Optimal control of the system with subdifferential material law JO - Theoretical and applied mechanics PY - 1996 SP - 91 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1996_22_1_a6/ LA - en ID - TAM_1996_22_1_a6 ER -