%0 Journal Article %A V. D. Stepanov %T On the vanishing of the symbol of a~convolution integral operator %J Sbornik. Mathematics %D 1985 %P 239-253 %V 51 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1985_51_1_a14/ %G en %F SM_1985_51_1_a14