%0 Journal Article %A S. I. Smagin %T A new class of integral equations that lower the dimension of %J Doklady Akademii Nauk %D 1991 %P 580-585 %V 316 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_316_3_a15/ %G ru %F DAN_1991_316_3_a15