%0 Journal Article %A F. V. Lubyshev %A A. R. Manapova %T Difference approximations of optimization problems for semilinear elliptic equations in a convex domain with controls in the coefficients multiplying the highest derivatives %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 2013 %P 20-46 %V 53 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_2013_53_1_a2/ %G ru %F ZVMMF_2013_53_1_a2