%0 Journal Article %A N. N. Vakhania %T Elementary proof of P\'olya's characterization theorem and of the necessity of second moment in the~CLT %J Teoriâ veroâtnostej i ee primeneniâ %D 1993 %P 168-171 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1993_38_1_a10/ %G ru %F TVP_1993_38_1_a10