%0 Journal Article %A A. V. Efimov %T An analog of Rudin's theorem for continuous radial positive definite functions of several variables %J Trudy Instituta matematiki i mehaniki %D 2012 %P 172-179 %V 18 %N 4 %U http://geodesic.mathdoc.fr/item/TIMM_2012_18_4_a15/ %G ru %F TIMM_2012_18_4_a15