%0 Journal Article %A F. V. Lubyshev %T Convergence of difference approximations and regularization of optimal control problems for elliptic equations %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1985 %P 983-1000 %V 25 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1985_25_7_a2/ %G ru %F ZVMMF_1985_25_7_a2