%0 Journal Article %A V. I. Berdyshev %T Stability of a~minimization problem under perturbation of the set of admissible elements %J Sbornik. Mathematics %D 1977 %P 401-412 %V 32 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1977_32_4_a0/ %G en %F SM_1977_32_4_a0