%0 Journal Article
%A L. P. Usol'tsev
%T On an exponential rational trigonometric sum of special type
%J Doklady Akademii Nauk
%D 1963
%P 62-64
%V 151
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_151_1_a15/
%G ru
%F DAN_1963_151_1_a15