%0 Journal Article
%A R. M. Trigub
%T Criterium Based on the Characteristic Function and the Polya-Type Sign for Radial Functions in Several Variables
%J Teoriâ veroâtnostej i ee primeneniâ
%D 1989
%P 805-810
%V 34
%N 4
%U http://geodesic.mathdoc.fr/item/TVP_1989_34_4_a23/
%G ru
%F TVP_1989_34_4_a23