%0 Journal Article %A Van Tung %T The enlargement property of direct values of generalized potentials for the comparison function and the %J Doklady Akademii Nauk %D 1963 %P 1288-1291 %V 152 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_6_a3/ %G ru %F DAN_1963_152_6_a3