%0 Journal Article %A R. S. Levitin %A T. L. Perel'man %A I. V. Travnitskaya %T On a limiting condition of a class of integro-differential equations with a nonintegrable kernel %J Doklady Akademii Nauk %D 1973 %P 775-778 %V 208 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_208_4_a4/ %G ru %F DAN_1973_208_4_a4