TY - JOUR AU - A. R. Danilin TI - Approximation of a~singularly perturbed elliptic problem of optimal control JO - Sbornik. Mathematics PY - 2000 SP - 1421 EP - 1431 VL - 191 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2000_191_10_a0/ LA - en ID - SM_2000_191_10_a0 ER -