%0 Journal Article %A M. A. Gol'dman %A S. N. Krachkovskii %T Behavior of the space of zero elements with finite-dimensional salient on the Riesz kernel under perturbations of the operator %J Doklady Akademii Nauk %D 1975 %P 532-534 %V 221 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_221_3_a5/ %G ru %F DAN_1975_221_3_a5