TY - JOUR AU - A. R. Danilin TI - Approximation of a singularly perturbed elliptic optimal control problem with geometric constraints on the control JO - Trudy Instituta matematiki i mehaniki PY - 2003 SP - 71 EP - 78 VL - 9 IS - 1 UR - http://geodesic.mathdoc.fr/item/TIMM_2003_9_1_a9/ LA - ru ID - TIMM_2003_9_1_a9 ER -