%0 Journal Article %A N. L. Vasilevskii %T On the Noether conditions and a formula for the index of a class of integral operators %J Doklady Akademii Nauk %D 1972 %P 747-750 %V 202 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1972_202_4_a1/ %G ru %F DAN_1972_202_4_a1