%0 Journal Article
%A N. P. Korneichuk
%A N. E. Lushpai
%T Best quadrature formulas for classes of differentiable functions and piecewise-polynomial approximation
%J Izvestiya. Mathematics 
%D 1969
%P 1335-1355
%V 3
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1969_3_6_a10/
%G en
%F IM2_1969_3_6_a10