%0 Journal Article %A V. L. Levin %T Extremal problems with convex functionals that are lower semicontinuous with respect to convergence in measure %J Doklady Akademii Nauk %D 1975 %P 1256-1259 %V 224 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a4/ %G ru %F DAN_1975_224_6_a4