TY - JOUR AU - M. I. Gusev TI - On the attainability problem under state constraints with piecewise smooth boundary JO - Trudy Instituta matematiki i mehaniki PY - 2015 SP - 50 EP - 58 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMM_2015_21_2_a4/ LA - ru ID - TIMM_2015_21_2_a4 ER -