%0 Journal Article
%A N. E. Lushpai
%A I. L. Zaichenko
%T Extremal numerical integration formulas for classes of differentiable periodic functions
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1987
%P 152-154
%V 180
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1987_180_a89/
%G ru
%F TM_1987_180_a89