%0 Journal Article
%A D. G. Vasilchenkova
%A V. I. Danchenko
%T Extraction of Several Harmonics from Trigonometric Polynomials. Fej\'er-Type Inequalities
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2020
%P 101-115
%V 308
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_2020_308_a7/
%G ru
%F TM_2020_308_a7