TY - JOUR AU - A. A. Tolstonogov TI - Relaxation in control systems of subdifferential type JO - Izvestiya. Mathematics PY - 2006 SP - 121 EP - 152 VL - 70 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2006_70_1_a5/ LA - en ID - IM2_2006_70_1_a5 ER -