%0 Journal Article
%A E. V. Voronovskaya
%T The construction of extremal trigonometric polynomials of mixed type
%J Doklady Akademii Nauk
%D 1968
%P 768-771
%V 179
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_179_4_a3/
%G ru
%F DAN_1968_179_4_a3