%0 Journal Article %A V. V. Krivov %T On the extremal differential form for generalized modulus %J Doklady Akademii Nauk %D 1981 %P 817-822 %V 257 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_257_4_a10/ %G ru %F DAN_1981_257_4_a10