%0 Journal Article %A A. G. Ramm %T Investigation of a class of integral equations %J Doklady Akademii Nauk %D 1976 %P 283-286 %V 230 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_230_2_a8/ %G ru %F DAN_1976_230_2_a8